CN112562486A

CN112562486A - On-site footprint protection harness

Info

Publication number: CN112562486A
Application number: CN202011316158.1A
Authority: CN
Inventors: 郭莛锐; 姚力
Original assignee: China Criminal Police University
Current assignee: China Criminal Police University
Priority date: 2020-11-22
Filing date: 2020-11-22
Publication date: 2021-03-26

Abstract

The invention provides an on-site footprint protection harness, belonging to the technical field of case on-site investigation tools; the on-site footprint protection harness comprises a protection shell and a cover body, wherein the protection shell comprises a side wall and an upper end face, an opening part is arranged at the center of the upper end face, and an annular water seal groove is arranged on the peripheral side of the opening part; the lid includes lateral wall and terminal surface, the lid lock is in when on the opening, the lateral wall of lid is located in the water seal groove. According to the scheme, the field footprint protection harness is buckled on the field footprint, so that the odor of the footprint does not flow along with air, the footprint is not easy to volatilize and degrade, and when the device is used, a cover body can be taken up to allow a police dog to smell the footprint without damaging the footprint; because of tight sealing, the humidity change in a certain time is not large for the soil footprint, so the footprint change is little.

Description

On-site footprint protection harness

Technical Field

The invention relates to the technical field of case on-site investigation tools, in particular to an on-site footprint protection harness.

Background

Suspicious footprints in the investigation field of the public security organization are divided into a plane footprint and a three-dimensional footprint, the plane footprint is generally photographed and fixed, and a three-dimensional footprint model is poured by gypsum after the three-dimensional footprint is photographed and fixed. The size of the footprint model is influenced by the change of ground humidity, and the change of the humidity needs to be reduced as much as possible; the police dog is required to be used for tracking according to the foot-print smell on the spot, the coming and going directions of the criminal suspect are determined, and the criminal suspect can be caught and put down even directly. The footprint odor has the characteristic of being very easy to volatilize and degrade due to the flowing of air, and the more the odor is volatilized and degraded, the less the residual odor is, so that the tracking work of the police dog is more difficult; police dogs and people with dogs want to approach or even touch the footprint in close proximity and the integrity of the footprint may be compromised. The subsequent plaster molding of the three-dimensional footprint has unexpected influence, and if the molding is performed firstly, the olfactory source is damaged, so that the police dog needs to sense the olfactory source firstly and then perform other treatment.

Disclosure of Invention

The invention aims to solve the technical problem of providing an on-site footprint protection harness to solve the problems that the three-dimensional footprint of a case site is influenced by the environment, the size is easy to change, and the footprint smell is volatile, so that the olfaction judgment of a police dog is influenced.

In order to solve the technical problems, the invention provides the following technical scheme:

an on-site footprint protection harness comprises a protection shell and a cover body, wherein the protection shell comprises a side wall and an upper end face, the upper end face is provided with an opening part, and an annular water seal groove is arranged on the peripheral side of the opening part; the lid includes lateral wall and terminal surface, the lid lock is in when on the opening, the lateral wall of lid is located in the water seal groove.

Wherein, the bottom of the protective shell is provided with an opening, and the edge of the opening is provided with a water sac.

Wherein, the water pocket is located protective housing's lateral wall bottom, the water pocket upper end is equipped with connecting portion, the connecting portion cover is established on protective housing's the lateral wall, the outside of connecting portion is equipped with the clamp, in order to incite somebody to action connecting portion fix on protective housing's the lateral wall.

The inner side of the connecting part is provided with a protrusion, the side wall of the protective shell is provided with a groove matched with the protrusion, and the protrusion is embedded in the groove.

The water bag is in an annular shape matched with the bottom opening of the protective shell, the connecting portion is arranged around the water bag in a circle, and the water bag is consistent in shape and coaxial with the water bag.

Wherein, a water injection pipe is arranged on the water bag and communicated with the water bag; the water injection pipe is obliquely arranged on the outer side of the connecting part and is higher than the connecting part; the end part of the water injection pipe is provided with a plug which can be plugged.

The upper end face of the protective shell is provided with two first handles, and the two first handles are symmetrically arranged on the outer side of the water seal groove; the end face of the cover body is provided with two second handles, and the two second handles are symmetrically arranged at two ends of the end face of the cover body.

The water seal groove comprises a groove bottom, an outer groove wall and an inner groove wall, wherein the outer side wall is consistent with the side wall of the cover body in height, and the inner groove wall is lower than the side wall of the cover body.

The cross section of the protective shell is circular, oval or oblong, and the water seal groove is consistent with the protective shell in shape.

The end face of the cover body is provided with an alarm lamp, a display device and switches for respectively controlling the alarm lamp and the display device, and the display device is used for displaying time, humidity and direction; and a power supply for supplying power to the alarm lamp and the display device is arranged at the bottom of the end face of the cover body.

The technical scheme of the invention has the following beneficial effects:

in the scheme, the field footprint protection harness is buckled on the field footprint, so that the odor of the footprint does not flow along with air, the footprint is not easy to volatilize and degrade, and when the device is used, a cover body can be taken up to allow a police dog to smell the footprint without damaging the footprint; because of tight sealing, the humidity change in a certain time is not large for the soil footprint, so the footprint change is little.

Drawings

FIG. 1 is an isometric view of the field footprint protection harness of the present invention;

FIG. 2 is an isometric view of a protective housing of the field footprint protection harness of the present invention;

FIG. 3 is an isometric view of the cover of the field footprint protection harness of the present invention;

FIG. 4 is a cross-sectional view of the field footprint protection harness of the present invention;

FIG. 5 is an enlarged view taken at A in FIG. 4;

FIG. 6 is an isometric view of a water bladder of the field footprint protection harness of the present invention;

FIG. 7 is a cross-sectional view of a water bladder of the field footprint protection harness of the present invention.

[ reference numerals ]

1. A protective housing; 101. water sealing the tank; 102. a groove;

2. a water bladder; 201. a connecting portion; 202. a protrusion; 203. a water injection pipe;

3. clamping a hoop;

4. a plug;

5. a cover body; 501. an alarm lamp; 502. a display device; 503. a power source.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 7, an embodiment of the present invention provides an on-site footprint protection harness, including a protective casing 1 and a cover body 5, where the protective casing 1 includes a side wall and an upper end face, an opening portion is provided at a center of the upper end face, and an annular water-sealed tank 101 is provided at an outer peripheral side of the opening portion; the cover body 5 comprises a side wall and an end face, when the cover body 5 is buckled on the opening part, the side wall of the cover body 5 is positioned in the water seal groove 101, and the cover body 5 and the protection shell 1 can be sealed by injecting clear water into the water seal groove 101.

As shown in fig. 4, the bottom of the protective shell 1 is open, and a water bag 2 is arranged at the edge of the opening. The water sac 2 is made of materials for manufacturing balloons, preferably natural latex or natural rubber with the thickness of 0.3-0.5 mm, can be naturally decomposed, and is environment-friendly and pollution-free. Due to the soft material of the water bag 2 and the fluidity of the internal water, the water bag 2 can fill up unevenness around the footprint, so that a closed cavity of the on-site footprint protection harness is formed, and meanwhile, the water bag 2 can also play a role in supporting all parts on the upper part.

As shown in fig. 4 and 5, the water bag 2 is located at the bottom of the side wall of the protective housing 1, a connecting portion 201 is arranged on the water bag 2, the connecting portion 201 is sleeved on the side wall of the protective housing 1, a clamp 3 is arranged on the outer side of the connecting portion 201, the clamp 3 is a stainless steel strip-shaped structure, two ends of the clamp are respectively provided with 90-degree folded edges, the folded edges are respectively provided with a through hole for passing through a bolt and fixing the bolt by screwing a nut, so that the connecting portion 201 is fixed on the side wall of the protective housing 1.

As shown in fig. 6, a circle of protrusions 202 is disposed on the inner side of the connecting portion 201, a groove 102 matched with the protrusions 202 is disposed on the side wall of the protective housing 1, and the protrusions 202 are embedded in the groove 102 to prevent slipping.

In this embodiment, the cross section of the protrusion 202 is semicircular, and the radius of the protrusion 202 is 0.1mm to 0.2mm larger than the radius of the groove 102. As shown in fig. 5, the position of the clip 3 corresponds to the position of the protrusion 202 for better fixation.

The water pocket 2 be with the annular of the bottom opening looks adaptation of protective housing 1, connecting portion 201 winds 2 a week of water pocket sets up, the shape with water pocket 2 is unanimous, and with the coaxial setting of water pocket 2.

As shown in fig. 6 and 7, a water injection pipe 203 is provided on the water bag 2, and the water injection pipe 203 is communicated with the water bag 2. The water injection pipe 203 is obliquely arranged outside the connecting part 201 and is higher than the connecting part 201. The end of the water injection pipe 203 is provided with a plug 4 which can be plugged, and the plug 4 plays a sealing role to prevent the clear water in the water bag 2 from overflowing. The plug 4 comprises a first cylindrical section and a second cylindrical section which are coaxially connected, the first cylindrical section is in interference fit with the water injection pipe 203, and the second cylindrical section is convenient to pinch by hand to extract the plug 4. In order to further enhance the sealing effect, a pipe hoop can be added on the periphery of the water injection pipe 203 for locking.

As shown in fig. 1 to 3, two first handles are disposed on the upper end surface of the protective casing 1, and the two first handles are symmetrically disposed on the outer side of the water-sealed tank 101. The end face of the cover body 5 is provided with two second handles, and the two second handles are symmetrically arranged at two ends of the end face of the cover body 5. When the police dog smells the smell, the second handle on the lid 5 is held to both hands, will lid 5 upwards slowly proposes (can not take water), exposes the opening of protective housing 1 lets the police dog smell.

As shown in fig. 4, the water-sealed tank 101 includes a tank bottom, an outer tank wall and an inner tank wall, wherein the outer wall is as high as the side wall of the lid 5, and the inner tank wall is lower than the side wall of the lid 5, so as to ensure that the bottom of the side wall of the lid 5 contacts with the tank bottom of the water-sealed tank 101, so that the water-sealed tank can be sealed by adding a small amount of clean water.

Wherein, the cross-sectional shape of the protective shell 1 is round, oval or oblong. The size of the protective shell 1 is larger than the size of a conventional footprint, the material is light materials such as acrylic, the protective shell is integrally formed by injection molding, and a light-tight film is pasted on the outer surface of the protective shell.

The water seal groove 101 with the shape of protective housing 1 is unanimous, the cross sectional shape of lid 5 with the slot shape looks adaptation of water seal groove 101, lid 5 is light-duty materials such as ya keli and best an organic whole injection moulding forms.

As shown in fig. 1, a warning lamp 501, a display device 502, and switches for controlling the warning lamp 501 and the display device 502, respectively, are mounted on the end surface of the cover 5. The alarm lamp 501 is a stroboscopic alarm lamp, and plays roles of warning and collision avoidance at night and gives a prompt to the position of the officer. The display device 502 has the functions of time display, humidity display and footprint orientation indication through a compass, and can reference and record the case environmental conditions. As shown in fig. 4, a power supply 503 for supplying power to the alarm lamp 501 and the display device 502 is mounted on the bottom of the end surface of the cover 5.

The use process of the on-site footprint protection harness provided by the invention is as follows:

in the field of the case, water is injected into the water bag 2, the water injection pipe 203 is sealed by the plug 4, the first handle of the protective shell 1 is lifted by two hands, the protective shell 1 is placed on the footprint in the middle, then the second handle of the cover body 5 is lifted by two hands, the side wall of the cover body 5 is placed in the water-sealed groove 101 of the protective shell 1, and then a proper amount of clean water is poured into the water-sealed groove 101; if the alarm lamp 501 is stroboscopic, the alarm lamp may be turned on to warn at night or when required.

According to the scheme, the cover body is buckled on the protective shell and sealed with the water seal groove of the protective shell, the water bag can naturally fill unevenness around the footprint to form a sealed cavity, the two parts are tightly sealed, when the field footprint protection harness is buckled on the field footprint, the odor of the footprint is not easy to volatilize and degrade, the retention time is long, when the police dog smells the odor, the cover body can be lifted upwards, the opening part of the protective shell is exposed, the police dog smells the odor and cannot touch the footprint, and meanwhile, due to tight sealing, the humidity change of the soil footprint within a certain time is not large, so that the footprint change is very small; the on-site footprint protection harness is small in size, light in weight, easy to carry, capable of injecting water on site, simple to operate, low in cost and suitable for batch production.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The on-site footprint protection harness is characterized by comprising a protection shell and a cover body, wherein the protection shell comprises a side wall and an upper end face, the upper end face is provided with an opening part, and an annular water seal groove is arranged on the peripheral side of the opening part; the lid includes lateral wall and terminal surface, the lid lock is in when on the opening, the lateral wall of lid is located in the water seal groove.

2. The field footprint protection harness of claim 1, wherein the bottom of the protective housing is open, and a water bladder is disposed at the edge of the opening.

3. The field footprint protection harness as claimed in claim 2, wherein the water bag is located at the bottom of the side wall of the protection housing, the upper end of the water bag is provided with a connecting portion, the connecting portion is sleeved on the side wall of the protection housing, and a clamp is arranged outside the connecting portion to fix the connecting portion on the side wall of the protection housing.

4. The field footprint protection harness of claim 3, wherein a protrusion is disposed on an inner side of the connecting portion, a groove matched with the protrusion is disposed on a side wall of the protective housing, and the protrusion is embedded in the groove.

5. The field footprint protection harness of claim 3, wherein the water bladder is in a ring shape that fits the bottom opening of the protective housing, and the connecting portion is disposed around the water bladder, is shaped to conform to the water bladder, and is disposed coaxially with the water bladder.

6. The field footprint protection harness of claim 3, wherein a water injection pipe is arranged on the water bag, and the water injection pipe is communicated with the water bag; the water injection pipe is obliquely arranged on the outer side of the connecting part and is higher than the connecting part; the end part of the water injection pipe is provided with a plug which can be plugged.

7. The field footprint protection harness as claimed in claim 1, wherein two first handles are provided on the upper end face of the protection housing, and the two first handles are symmetrically arranged on the outer side of the water seal tank;

the end face of the cover body is provided with two second handles, and the two second handles are symmetrically arranged at two ends of the end face of the cover body.

8. The field footprint protection harness of claim 1, wherein the water seal trough includes a trough bottom, an outer trough wall, and an inner trough wall, wherein the outer side wall is at a uniform height with the side wall of the cover body, and the inner trough wall is lower than the side wall of the cover body.

9. The field footprint protection harness of claim 1, wherein the protective housing has a cross-sectional shape that is circular, elliptical, or oblong, and the water-tight trough conforms to the shape of the protective housing.

10. The field footprint protection harness of claim 1, wherein an alarm lamp, a display device and switches for controlling the alarm lamp and the display device, respectively, are mounted on the end surface of the cover body, the display device being used for displaying time, humidity and direction; and a power supply for supplying power to the alarm lamp and the display device is arranged at the bottom of the end face of the cover body.