Adjustable investigation box structure for fire investigation video test

Abstract

The utility model relates to the technical field of fire investigation test equipment, and particularly discloses an adjustable investigation box structure for a fire investigation video test, which comprises a box body, an auxiliary plate and a display screen assembly, an auxiliary plate is arranged in the box body, an operation panel is arranged on the auxiliary plate, and a display screen assembly is installed on the rear edge of the auxiliary plate through a double-output-shaft forward and reverse self-locking stepping motor. The display screen assembly is of a folding structure formed by sequentially hinging a plurality of display screens. An adjusting knob is arranged on the outer side face of the box body and electrically connected with the double-output-shaft forward and reverse self-locking stepping motor through a single-chip microcomputer. The display screen assembly is adjusted to different pitching angles by rotating the adjusting knob, and the pitching angles of the display screen assembly are automatically locked when the adjusting knob is not adjusted. The exploration box has the advantages that the exploration box can be used after being opened, an extra support for supporting is avoided, test time is saved, and work efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire investigation test equipment structures, in particular to an adjustable investigation box structure used for fire investigation video tests. Background Art

[0002] When investigating a fire, fire investigators will extract and copy the video surveillance files at the fire scene, and then take them back to the video analysis laboratory or hand them over to a professional appraisal agency for analysis and appraisal.

[0003] However, direct analysis based solely on raw footage from surveillance video is difficult. Therefore, fire investigators often conduct fire light and shadow simulations at the scene. Through these simulations, they can identify the light and shadow patterns that most closely resemble those in the surveillance footage, thereby tracing the source of the fire and facilitating fire investigations.

[0004] Currently, common fire light and shadow simulation experiments require installing a test camera and connecting it to a laptop computer via a network cable, involving switches and other related components. This makes on-site setup very cumbersome and inconvenient. Furthermore, when using a laptop for analysis, since only one display is available, it is impossible to simultaneously display the original video, the simulated test footage, and the light and shadow comparison during the on-site experiment. Therefore, the only solution is to set up more computer monitors for simultaneous viewing.

[0005] Therefore, our company installed a survey box with an operating panel and three display screens—its functions are similar to those of a laptop computer. A wireless communication module is installed within the survey box, which transmits real-time images to a wireless camera. Wireless communication saves time on-site wiring, and the three-screen configuration eliminates the need to install more screens. Furthermore, the survey box's structure is designed so that after opening the survey box and the display assembly, the display assembly no longer requires support (the heavy display assembly requires support to secure it). Instead, the structure supports itself, and this structure can automatically adjust the pitch angle of the display assembly, saving time on supporting the display assembly (it can be used immediately after opening). This reduces the time spent on the entire simulation test. Utility Model Content

[0006] The purpose of the utility model is to overcome the shortcomings of the prior art and provide an adjustable investigation box structure for fire investigation video testing, which can be used as soon as the investigation box is opened, avoids the use of additional brackets for support, saves test time, and improves work efficiency.

[0007] The purpose of the utility model is achieved through the following technical solutions: an adjustable investigation box structure for fire investigation video testing, comprising a box body, an auxiliary board, and a display screen assembly;

[0008] The box body is provided with an auxiliary plate, an operation panel is provided on the auxiliary plate, and a display screen assembly is installed on the rear edge of the auxiliary plate via a double-output shaft forward and reverse self-locking stepper motor; the operation panel and the display screen assembly have the same function as a laptop computer;

[0009] A wireless communication module is provided in the box, and the wireless communication module is used to receive the images sent back by the wireless camera installed in the simulation test, and the wireless communication module transmits the signal to the display screen assembly;

[0010] The display screen assembly comprises multiple display screens hinged in sequence to form a folding structure. When unfolded, all the display screens are located in the same plane. When folded, the display screens on the left and right are folded to the display screen in the middle.

[0011] An adjustment knob is provided on the outer side of the box body, and the adjustment knob is electrically connected to the dual-output shaft forward and reverse self-locking stepper motor through the single-chip microcomputer; the display screen assembly is adjusted to different pitch angles by rotating the adjustment knob, and the pitch angle of the display screen assembly is automatically locked when not adjusted.

[0012] In some embodiments, a load-bearing block is provided in the box body to keep the survey box balanced when the pitch angle of the display screen assembly is raised to an obtuse angle.

[0013] In some embodiments, the box body is hinged with a box cover. When the display screen assembly is folded and then the pitch angle is adjusted so that it is buckled on the auxiliary plate, the box cover can be buckled to seal the display screen assembly.

[0014] In some embodiments, the display screen assembly includes a left display screen, a middle display screen, and a right display screen that are hinged in sequence. The front sides of the upper and lower edges of the right display screen each have a raised rib, with notches formed near the left and right ends of the raised rib. A dual-axis forward and reverse self-locking stepper motor is located in each notch. The output shafts of the dual-axis forward and reverse self-locking stepper motor are fixedly connected to the raised ribs at both ends, and the lower surface of the dual-axis forward and reverse self-locking stepper motor is fixed to an auxiliary plate. Hinged assemblies with the same structure are located at the lower left corner, upper left corner, lower right corner, and upper right corner of the middle display screen—that is, at both ends of the corresponding raised ribs. The right edge of the left display screen and the left edge of the right display screen are hinged to the middle display screen via corresponding hinge assemblies.

[0015] In some embodiments, the hinge assembly at the lower left corner of the central display screen includes a base block. The base block has a first horizontal plate and a first rear baffle. The first horizontal plate is located on the right side of the base block and is flush with the bottom surface of the base block. The first rear baffle is fixed to the rear side surface and the two are located in the same plane. The right end of the first rear baffle extends beyond the right side of the base block. At the lower left corner of the central display screen, its back surface is in contact with the front side of the first rear baffle and is screwed in place. Its lower surface is in contact with the second horizontal plate and is screwed in place.

[0016] In some embodiments, a column is provided on the upper surface of the base block, and a second horizontal plate is sleeved on the column; the second horizontal plate is fitted with the upper surface of the left end of the raised rib at the lower edge of the middle display screen and is locked with screws.

[0017] In some embodiments, the base block further includes a third horizontal bar mounted on the upright column, and a third rear stopper inserted into the upright column. The third rear stopper comprises a large head and a rear stopper; the large head has a socket for insertion into the end of the upright column. At the lower right corner of each left display screen, the back surface is aligned with the front side of the rear stopper and screwed in place, while the bottom surface is aligned with the upper surface of the third horizontal bar and screwed in place.

[0018] The utility model has the following advantages:

[0019] (1) More convenient in analysis and operation;

[0020] In the prior art, when performing fire investigation video analysis at a fire scene, a laptop is often used. This requires switching back and forth between video analysis, light and shadow processing, and result display, which is very inconvenient. Consequently, multiple display screens need to be set up, which is time-consuming.

[0021] The survey box of this solution has multiple display screens, and the display screens can be unfolded. The corresponding display screens and operation panels have the same functions as laptop computers, so there is no need to set up display screens, saving time;

[0022] (2) Once the survey box is opened, it can operate normally without the need for additional brackets;

[0023] When this solution is working: drag the survey box directly to the site, open the box cover, and then use the adjustment knob to pitch the display assembly to the appropriate angle, and then unfold the left and right display screens; then you can turn on the machine for analysis, which is very simple and convenient;

[0024] The pitch angle of the display screen assembly is adjusted by a double-axis forward and reverse self-locking stepper motor. When not adjusted, the pitch angle of the display screen assembly can be self-locked - because the display screen assembly is heavy and can easily fall over due to its weight; the balance of the survey box is ensured by the load-bearing block;

[0025] The structure of the hinge assembly between the middle display screen, the left display screen, and the right display screen enables all the display screens to be roughly located in the same plane when the display screen assembly is unfolded;

[0026] Therefore, the setting of the dual-axis forward and reverse self-locking stepper motor and the setting of the hinge assembly can avoid the need to set up some additional supports - otherwise the display assembly cannot be guaranteed to unfold properly, and can be opened directly, saving the time of setting up additional supports;

[0027] (3) In this solution, the wireless transmission method saves wiring time; the setting of three display screens, and the opening through the double-axis forward and reverse self-locking stepper motor, as well as the self-locking support method, make it unnecessary to set up additional brackets for the display screens; therefore, this solution can be quickly arranged on site, and the staff can quickly enter the analysis state, which is very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural diagram of the utility model;

[0029] Figure 2 This is a schematic diagram of the first perspective of the utility model after the box cover is removed;

[0030] Figure 3 This is a second perspective diagram of the present invention after the box cover is removed;

[0031] Figure 4 A schematic diagram showing the relationship between the auxiliary board and the display screen assembly from a first-person perspective;

[0032] Figure 5 A second perspective diagram of the auxiliary board and the display screen assembly;

[0033] Figure 6 A first-person perspective diagram of a display screen assembly;

[0034] Figure 7 is a schematic diagram of a display screen assembly from a second viewing angle;

[0035] Figure 8 This is a schematic diagram of the structure of the hinge assembly and the double-output shaft forward and reverse self-locking stepper motor installed on the central display screen;

[0036] Figure 9 is a first-person perspective schematic diagram of the hinge assembly;

[0037] Figure 10 is a schematic diagram of the hinge assembly from a second perspective;

[0038] Figure 11 is a third-view schematic diagram of the hinge assembly;

[0039] Figure 12 is a schematic diagram of the hinge assembly from a fourth perspective;

[0040] Figure 13 This is a schematic diagram of the structure of the hinge assembly after removing the thirteenth rear stopper and the pillar;

[0041] Figure 14 Schematic diagram of the structure of the display screen;

[0042] In the figure: 10 - box body, 20 - box cover, 30 - auxiliary board, 40 - operation panel, 50 - display screen assembly, 51 - raised rib, 52 - double-output shaft forward and reverse self-locking stepping motor, 53 - adjustment knob;

[0043] 60-hinge assembly, 61-base block, 62-first horizontal plate, 63-first rear baffle, 64-second horizontal plate, 65-third horizontal bar, 66-third rear baffle, 6601-large head, 6602-baffle part. DETAILED DESCRIPTION

[0044] The present invention will be further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0045] It should be noted that the directions or positional relationships indicated by "left" and "right" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use, or are the directions or positional relationships commonly understood by those skilled in the art. Such terms are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the utility model.

[0046] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions therein can be combined with each other.

[0047] See Figure 1-Figure 5 The adjustable investigation box structure for fire investigation video test includes a box body 10 and a box cover 20 hingedly connected thereto. The inner wall of the box body 10 has a circumferential step, and an auxiliary plate 30 is placed on the step and the two are locked by screws.

[0048] A large opening is formed in the center of the auxiliary panel 30, where an operation panel 40 is placed and screwed. The operation panel 40 is consistent with the keyboard operation area on a laptop computer. A display screen assembly 50 is provided near the rear edge of the auxiliary panel 30. The two can be adjusted in pitch and can be self-locking. The display screen assembly 50 and the operation panel 40 are electrically connected, and together they function like a laptop computer. If the case 10 becomes worn, the auxiliary panel 30 can be simply removed and replaced with a new case 10.

[0049] Furthermore, the display screen assembly 50 comprises three display screens, namely, a left display screen, a center display screen, and a right display screen. The left display screen and the right display screen are hinged to the left and right sides of the center display screen, respectively, and can be folded at the position of the center display screen. Furthermore, the center display screen is mounted on the auxiliary plate 30. The left, center, and right display screens are shaped like a computer with multiple screens. When performing fire-adjusted video analysis, different analysis modules can be displayed on different display screens. For example, one display screen can be used to display the original video image, one display screen can be used to process the image, and one display screen can be used to display the analysis results. This makes operation and analysis more convenient than using only a single display screen.

[0050] In addition, a wireless communication module is provided in the box 10. The wireless communication module is used to receive images transmitted by the wireless camera installed in the simulation test, and the wireless communication module transmits the signal to the display assembly 50. The box 10 can accommodate a rangefinder and a copy machine. A rear weight plate is also provided in the box 10. The box 10 is provided with a retractable pull rod and rollers for easy dragging.

[0051] When it is necessary to conduct fire investigation through video analysis at the scene after a fire: the entire investigation box is directly dragged to the scene and the position of the investigation box is adjusted; then the box cover 20 is opened, the display screen assembly 50 is lifted to a certain angle, and the left and right display screens are respectively unfolded along the left rear; the weighted plate can prevent the investigation box from tipping over; thus, the analysis scene is arranged by simply unfolding, which is convenient for the staff to conduct on-site fire investigation analysis;

[0052] It should be noted that when video analysis is generally used for fire investigation, it is usually completed in the office using a laptop or desktop computer, but this method does not perform well in fire investigation. Therefore, many companies gradually choose to carry laptops to the site for fire investigation, but laptops only have one display screen, which is very inconvenient when performing fire investigation. Therefore, this solution adopts a structure in which multiple display screens and a keyboard operation panel 40 are installed in the investigation box. Its functions are the same as those of a laptop computer, except that there are several more display screens. By dragging the investigation box to the site, fire investigation analysis can be performed, which is more convenient.

[0053] The structure and installation structure of the display screen assembly 50 will be further described below.

[0054] It should be noted that because the display assembly 50 includes three displays, left, center, and right, it is relatively heavy. When the display assembly 50 is lifted to a certain angle—for example, an obtuse angle—gravity can cause the display assembly 50 to collapse. Furthermore, gravity can easily cause the left and right displays to become out of alignment with the center display. Therefore, this solution addresses this issue by redesigning the structure and mounting structure of the display assembly 50.

[0055] In some embodiments, see Figure 6-Figure 8 、 Figure 14 On the front surface of the middle display screen, there are two raised ribs 51 at the upper and lower edges respectively. Notches are respectively opened at the left and right positions of the raised ribs 51 on the lower edge. A double-output shaft forward and reverse self-locking stepping motor 52 is provided in the notches. The output shaft of the double-output shaft forward and reverse self-locking stepping motor 52 extends into the raised ribs 51 and is fixedly connected. The lower surface of the double-output shaft forward and reverse self-locking stepping motor 52 is fixed to the auxiliary plate 30.

[0056] In addition, an adjustment knob 53 is provided on the outer side surface of the box body 10, and the adjustment knob 53 is electrically connected to the double-output shaft forward and reverse self-locking stepper motor 52; by rotating the angle of the adjustment knob 53, the double-output shaft forward and reverse self-locking stepper motor 52 is rotated to different angles, thereby adjusting the pitch angle of the display screen assembly 50; when the pitch angle adjustment is not performed, the pitch angle is locked by relying on the self-locking of the double-output shaft forward and reverse self-locking stepper motor 52; even if the display screen assembly 50 is lifted to an obtuse angle, it can avoid falling over by relying on the self-locking, and then the balance of the entire survey box is ensured by the weight block in the box body 10, without the need to set up an additional support frame, only Drag the entire investigation box to the fire scene, and then open the display screen assembly 50 to a certain angle by adjusting the knob 53 (it should be noted that the adjusting knob 53 is connected to the dual-output shaft forward and reverse self-locking motor stepper through the single-chip microcomputer control board. By generating a certain number of pulse signals, the motor can be rotated to the corresponding angle. For example, a pitch angle is 1° - that is, one pulse rotates 1°. By adjusting the knob 53 to the 30° position, the corresponding single-chip microcomputer generates 30 pulses. The angle control scheme of the motor is a conventional control technology in the motor field. This scheme only applies the existing technology and will not be repeated here).

[0057] The hinge connection between the left display screen, the right display screen and the center display screen will be further described below.

[0058] In some embodiments, two hinge assemblies 60 are provided at both ends of the raised ribs 51 on the upper and lower edges of the middle display screen; the upper and lower ends of the right edge of the left display screen are connected to corresponding hinge assemblies 60, respectively; the upper and lower ends of the right edge of the right display screen are connected to corresponding hinge assemblies 60, respectively.

[0059] Specifically, see Figures 9-13 , taking the hinge assembly 60 at the left end of the raised rib 51 on the lower edge of the middle display screen (i.e., the lower left corner of the middle display screen) as an example:

[0060] It includes a base block 61, which has a first horizontal plate 62 and a first rear baffle 63. The first horizontal plate 62 is located on the right side of the base block 61 and is flush with the bottom surface of the base block 61. The first rear baffle 63 is fixed to the rear side surface and the two are located in the same plane. The left end, right end, and upper end of the first rear baffle 63 all extend out of the corresponding left side, right side, and upper surface of the base block 61.

[0061] The first horizontal plate 62 forms a right angle with the right portion of the first rear baffle 63. The lower left corner of the central display screen is placed at this right angle. Screws are passed through the back of the rear portion of the first rear baffle 63 to connect to the back of the central display screen. Screws are passed upward from the bottom of the first horizontal plate 62 to connect to the lower surface of the central display screen. A column is fixed to the upper surface of the base block 61. The column is sleeved with a second horizontal plate 64. The second horizontal plate 64 extends from the upper surface of the raised rib 51 on the lower edge of the central display screen and the two are screwed together.

[0062] After several gaskets are sleeved on the column, a third horizontal bar 65 is sleeved, and the third horizontal bar 65 extends to the left; then after several gaskets are sleeved on the column, a third rear blocker 66 is inserted, and the third rear blocker 66 includes an integrated large head 6601 and a baffle portion 6602. The third rear blocker 66 is in the shape of a whistle, and the large head 6601 is shaped like a whistle body, and the baffle portion 6602 forms a mouthpiece. A jack is provided on the side of the large head 6601, and the jack of the large head 6601 is inserted into the upper end of the column; the baffle portion 6602 of the third rear blocker 66 forms a right angle area with the third horizontal bar 65, and the lower left corner of the left display screen is placed at the right angle area, and then the left display is fixed to the third horizontal bar 65 with screws, and the left display screen is fixed to the third blocker portion with screws;

[0063] When the left display screen is folded around the center display screen, the left end of the left display screen can be folded forward to the front surface of the center display screen. When the left end of the left display screen is folded backward, the baffle portion 6602 of the third rear baffle 66 abuts against the first rear baffle 63, so that the left display screen can be roughly located in the same plane as the center display screen when unfolded.

[0064] It should be noted that the hinge components 60 at the upper left corner, upper right corner, and lower right corner of the central display screen have the same installation structure as the hinge component 60 at the lower left corner.

[0065] It should be noted that a battery is also provided in the box, and the battery can serve as a load-bearing block.

[0066] The above embodiments merely represent preferred implementations, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art will be able to make various modifications and improvements without departing from the scope of the present invention, and these modifications and improvements are all within the scope of protection of the present invention.

Claims

1. An adjustable survey box structure for fire investigation video testing, characterized by: It includes a box body (10), an auxiliary plate (30), and a display screen assembly (50); An auxiliary plate (30) is provided in the box body (10), an operating panel (40) is provided on the auxiliary plate (30), and a display screen assembly (50) is installed at the rear edge of the auxiliary plate (30) via a double-shaft forward and reverse self-locking stepping motor (52); the operating panel (40) and the display screen assembly (50) have the same function as a laptop computer; A wireless communication module is provided in the box (10), and the wireless communication module is used to receive images transmitted back by a wireless camera installed in the simulation test, and the wireless communication module transmits the signal to the display screen assembly (50); The display screen assembly (50) is a plurality of display screens hinged in sequence to form a folding structure. When unfolded, all the display screens are located in the same plane. When folded, the display screens at the left and right positions are folded to the display screen at the middle position. An adjusting knob (53) is provided on the outer side of the box body (10), and the adjusting knob (53) is electrically connected to the dual-axis forward and reverse self-locking stepping motor (52) via the single-chip microcomputer; the display screen assembly (50) is adjusted to different pitch angles by rotating the adjusting knob (53); when not adjusted, the pitch angle of the display screen assembly (50) is automatically locked.

2. The adjustable survey box structure for fire investigation video testing according to claim 1 is characterized by: A load-bearing block is provided in the box body (10), so that the survey box can maintain balance when the pitch angle of the display screen assembly (50) is raised to an obtuse angle.

3. The adjustable survey box structure for fire investigation video testing according to claim 1 is characterized by: The box body (10) is hinged with a box cover (20); when the display screen assembly (50) is folded, the pitch angle is adjusted to allow it to be buckled on the auxiliary plate (30), and when the box cover (20) is buckled, the display screen assembly (50) can be sealed.

4. The adjustable investigation box structure for fire investigation video testing according to any one of claims 1 to 3, characterized in that: The display screen assembly (50) comprises a left display screen, a middle display screen, and a right display screen that are hinged in sequence; A raised rib (51) is provided on the front side of the upper and lower edges of the right display screen. The raised rib (51) has a notch near the left and right ends. A double-output shaft forward and reverse self-locking stepper motor (52) is provided at the notch. Both ends of the output shaft of the double-output shaft forward and reverse self-locking stepper motor (52) are fixedly connected to the raised rib (51), and the lower surface of the double-output shaft forward and reverse self-locking stepper motor (52) is fixed to the auxiliary plate (30). Hinge assemblies (60) with the same structure are provided at the lower left corner, upper left corner, lower right corner, and upper right corner of the middle display screen, i.e., at both ends of the corresponding raised ribs (51); the right edge of the left display screen and the left edge of the right display screen are hinged to the middle display screen via the corresponding hinge assemblies (60).

5. The adjustable survey box structure for fire investigation video testing according to claim 3 is characterized by: A hinge assembly (60) at the lower left corner of the middle display screen, comprising a base block (61); The base block (61) has a first horizontal plate (62) and a first rear baffle (63); the first horizontal plate (62) is located on the right side of the base block (61) and is flush with the bottom surface of the base block (61); the first rear baffle (63) is fixed on the rear side surface and the two are located in the same plane, and the right end of the first rear baffle (63) extends out of the right side of the base block (61); At the lower left corner of the middle display screen, its back surface is fitted with the front side of the first rear baffle (63) and is locked with screws, and its lower surface is fitted with the second horizontal plate (64) and is locked with screws.

6. The adjustable survey box structure for fire investigation video testing according to claim 5, characterized in that: The upper surface of the base block (61) is provided with a column, and a second horizontal plate (64) is sleeved on the column; the second horizontal plate (64) is fitted with the upper surface of the left end of the raised rib (51) at the lower edge of the middle display screen and is locked with screws.

7. The adjustable survey box structure for fire investigation video testing according to claim 6, characterized in that: On the base block (61), a third horizontal bar (65) is sleeved on the column, and a third rear stopper (66) is inserted into the column; The third rear stopper (66) has a large head (6601) and a rear stopper (6602); the large head (6601) is provided with a socket, which is inserted into the end of the column; At the lower right corner of each left display screen, its back surface is fitted with the front side of the rear stop (6602) and is screwed, and its lower surface is fitted with the upper surface of the third horizontal bar (65) and is screwed.

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