643results about How to "Not easy to damage" patented technology

The utility model discloses a heat preservation decoration composite board and an outer wall heat preservation structure, the heat preservation decoration composite board comprises a special foaming ceramic panel located on the outer side and a heat preservation material layer located on the inner side, and the special foaming ceramic panel and the heat preservation material layer are connected or bonded together in a composite mode; rabbets are formed in the periphery of the special foaming ceramic panel; the special foaming ceramic panel comprises a front layer structure and a rear layer structure and is divided into a front plate and a rear plate, the front plate and the rear plate are the same in shape and size, the front plate and the rear plate are staggered in the up-down direction, the front plate and the rear plate are also staggered in the left-right direction, and a tongue-and-groove is formed. According to the utility model, the problems of easy water seepage and cold and hot bridge generation at the abutted seam between the composite boards are solved; and the board body is easy to damage due to slotting on the composite board. The external corner part and the periphery of the window opening are easy to crack and damage due to water seepage; the volume weight of the thermal insulation panel material is large, and the panel body is easy to fall off.

The application provides a container assembly and a heating device, the container assembly comprising: a container body, a convex and concave pattern formed by a convex and a groove being arranged on the inner side wall and the inner bottom wall of the container body; a non-stick coating arranged in the groove; the projected area of the non-stick coating on the inner side wall is a, the area of the inner side wall is S1, the projected area of the non-stick coating on the inner bottom wall on the inner bottom wall is b, the area of the inner bottom wall of the container body is S2, and a / S1<=b / S2. According to the scheme, the non-stick coating can be protected by the convex between the grooves, so that the non-stick coating is not easy to be scratched and worn. The heat conduction performance of the non-stick coating is relatively poor compared with the heat conduction performance of the container material, so that the projected area ratio of the non-stick coating on the inner side wall is smaller than the projected area ratio of the non-stick coating on the inner bottom wall, the heat conduction performance of the side wall of the container body can be relatively increased, the heat of the bottom of the container body can be more conducted to the side wall of the container body, and the food materials in the whole container assembly can be heated more uniformly.

The anti-slip device and tubing string are characterized by comprising an integrated U-shaped injection valve, an integrated U-shaped injection control valve, tubing, etc. Several integrated U-shaped injection valves spaced several meters apart are connected to the tubing string, and multiple integrated U-shaped injection control valves spaced several meters apart are connected to the tubing string, forming the anti-slip device and tubing string. Within the anti-slip device and tubing string, there are several U-shaped injection ports and multiple channels, as well as several upward-vertical-downward-vertical-upward U-shaped channels and gas-liquid mutually sealed end faces, forming a gas-driven liquid flow pattern. This prevents liquid backflow and slippage while retaining the rising gas. The channels of the integrated U-shaped injection control valve are used to introduce gas from outside the integrated U-shaped injection control valve into it to reduce the density of the fluid passing through it. This achieves the purpose of lifting, producing, and discharging deep-well liquids with lower gas pressure and volume, preventing liquid slippage and backflow, and improving the efficiency of gas lift liquid production and discharge.

The utility model belongs to the technical field of spraying disinfection of sterilization cabinets, and particularly relates to a sterilization cabinet with a spraying function, which comprises a spraying component, a protective shell component is mounted at the bottom of the spraying component, and an adjustable support plate component is mounted in the protective shell component; the spraying assembly comprises a pesticide storage tank, a motor is fixedly connected to the top of the pesticide storage tank, a connecting rod is fixedly connected to the top of the motor, a stirring rod is fixedly connected to the outer wall of the connecting rod, a connecting pipe is fixedly connected to the side of the pesticide storage tank, and a water pump is fixedly connected to the end of the connecting pipe. The side of the water pump is fixedly connected with a liquid outlet pipe, one side of the liquid outlet pipe is fixedly connected with a fixing clamp, and the other side of the liquid outlet pipe is in threaded connection with a spray head. Threaded connection has good sealing performance, liquid medicine can be prevented from leaking in the conveying process, the stability of liquid medicine spraying pressure is guaranteed, and then the spraying range and strength can be effectively controlled.

The utility model belongs to the technical field of battery manufacturing equipment, and discloses a turnover grabbing mechanism. The mechanism comprises a bearing plate, a moving module, a linkage assembly and an overturning assembly. The output end of the moving module is connected to the bearing plate. The overturning assembly is hinged to the bearing plate and used for clamping a product. The linkage assembly is connected between the bearing plate and the overturning assembly and comprises a first driving piece, a connecting block and a transmission rod, the first driving piece is installed on the bearing plate, the output end of the first driving piece is connected to the connecting block and used for driving the connecting block to move in the vertical direction, and the transmission rod is hinged between the overturning assembly and the connecting block. Through the arrangement, the structure of the linkage assembly can be simplified, the production and manufacturing cost is reduced, the linkage assembly is not prone to being damaged, the durability is higher, compared with a rotary motor which is prone to being damaged, the use and replacement cost is lower, stability can be kept in the product overturning control process, the risk of product falling is reduced, and the production efficiency is improved. And therefore, the safety and the reliability of the product in the overturning process are improved.

The utility model relates to a wig piece assembly which comprises a first wig piece (1) and a second wig piece (2) which are connected with each other in a matched mode, and the first wig piece (1) and the second wig piece (2) are connected to the hair of a user in a clamped mode. Each of the first wig piece (1) and the second wig piece (2) is provided with a wig wire (3), a bearing layer (4) and an adhesive layer (5), one end of the wig wire (3) is fixedly connected with the bearing layer (4), the adhesive layer (5) is matched with the bearing layer (4), and the bearing layer (4) is fixedly connected with the adhesive layer (5). By means of the design, the wig piece assembly and the real hair of a user can be connected more stably, meanwhile, the hair is not prone to being damaged, and the wig piece assembly is easy to detach.

The utility model discloses a gallium nitride output essential safety type power supply, including power supply body and bottom mounting plate, the casing bottom of power supply body is fixed with bottom mounting plate, still include guide and scatter mechanism, the guide and scatter mechanism includes top and exposes the groove, heat conduction silicon pad, double -faced wrong groove board, edge and exposes the groove, gantry clamping plate, lead touch piece, edge fin, bottom link and horn, through setting up guide and scatter mechanism and carry out heat dissipation improvement to the essential safety type power supply of gallium nitride semiconductor technology's application, and the top and exposes the groove of guide and scatter mechanism cooperation deep groove reduces the casing thickness of power supply body, and then combines heat conduction silicon pad and double -faced wrong groove board, forms the efficient heat conduction path and conducts heat dissipation outward, and simultaneously, the gantry clamping plate collocates lead touch piece and edge fin, constructs the multi -point three -dimensional heat dissipation surface of top surface and side surface formula, solves the casing heat dissipation blind area problem of power supply body, realizes the heat of power supply body and multi -point dispersion export.

The invention provides an intelligent bracelet for old people, which comprises a bracelet main body, and a display screen is mounted on the bracelet main body; a health monitoring module is arranged in the bracelet main body and is used for monitoring heart rate, blood oxygen and body temperature of the elderly; a health monitoring module is arranged on one side of the bracelet main body, a key alarm module is arranged on one side of the health monitoring module, the key alarm module is arranged in the bracelet main body, the key alarm module comprises a key device, the key device is arranged on one side of the bracelet main body, the key alarm module further comprises a key monitoring unit and a key alarm unit, and a wireless connection module is arranged on one side of the key alarm module. The wireless connection module is arranged in the bracelet main body, and the wireless connection module is used for being connected with external equipment. Mounting blocks are arranged on the two sides of the bracelet body, and a wrist strap connecting piece is arranged between the two mounting blocks. Through cooperative arrangement of all the structures, flexible wrist wearing adjustment can be conveniently carried out according to wearing requirements of different old people, one-key alarm operation is facilitated, and meanwhile operation is easy and popularization is convenient.

The utility model discloses a male head and female seat locking and separating device, which comprises a male head, a female seat and a locking mechanism, a jack is vertically arranged in the female seat, a pin extending downwards is arranged at the lower end of the male head, the pin is matched with the jack, a shaft head horizontally protruding outwards is arranged on the outer wall of the male head, and the pin is matched with the shaft head. A pin shaft horizontally extending outwards is arranged on the outer wall of the female seat and located below the shaft head, the locking mechanism comprises a handle part, two lug plates extending towards the same side are arranged at the lower end of the handle part, opening arc grooves are formed in the lug plates, and openings of the opening arc grooves are formed in the outer side ends of the lug plates; the portion, below the open arc groove, of the lug plate is a lip portion, the joint of the outer end of the lower groove face of the open arc groove and the lip portion is a protruding arc face, an oval hole is formed in the lip portion, and the pin shaft is located in the oval hole. According to the male head and female seat locking and separating device, the male head and the female seat are convenient and labor-saving to plug and pull, ignition is not easy to occur, and the male head and female seat locking and separating device is safe and not easy to damage.

Cleaning brushes (100, 200), a smart cleaning device, and a method for manufacturing the cleaning brushes (100, 200). The cleaning brushes (100, 200) each comprise a mounting shaft (110), an elastic support member (120), and a tubular member (130); the elastic support member (120) has a through hole extending in the axial direction, and the elastic support member (120) is sleeved on the mounting shaft (110) by means of the through hole; the tubular member (130) is sleeved on the elastic support member (120) and provided with blades (131, 231) integrally formed together with the tubular member (130); an adhesive layer is provided both between the mounting shaft (110) and the elastic support member (120) and between the elastic support member (120) and the tubular member (130), such that the mounting shaft (110), the elastic support member (120), and the tubular member (130) are bonded together.

The invention provides novel injection type glycerine enema which comprises an injection assembly, and the injection assembly comprises an injection tube, a piston, a push rod, a push block, a nipple, a fixing ring, a sealing ring, a gradually-hardened tube, a cavity, an L-shaped plate, a clamping block, a flexible steel rope, a pull ring, a mounting block and a clamping groove. And a piston is connected to the inner wall of the injection tube in a sliding manner. The gradually-hard tube is inserted into a place where the injection tube is inserted, the push block is pushed to drive the push rod to move, the push rod drives the piston to slide on the injection tube, and liquid medicine is pushed in through the gradually-hard tube, outflow and injection caused by two-time extrusion of common glycerine enema are avoided through one-time injection of 20 ml, two-time mucosa damage is avoided, pollution caused by excrement back-pumping after extrusion is finished is avoided, and the injection efficiency is improved. The pull ring is pulled leftwards, the pull ring drives the clamping block to be separated from the clamping groove through the flexible steel rope, the sealing ring is moved to take down the gradually-hard tube, and the gradually-hard tube is disinfected and cleaned respectively, so that the comfort degree is improved, the rectal mucosa is not prone to being damaged, all liquid medicine can be pushed in in a pushing injection mode, and the liquid medicine is not left and wasted.

This utility model relates to the technical field of biscuit processing equipment, specifically a hard-limit positioning pin mechanism. It includes a frame, a drive shaft located at the center of the top surface of the frame, a turntable mounted on the top of the drive shaft, and positioning components mounted on the outer circumference of the drive shaft. Multiple positioning seats are mounted on the top surface of the frame, circumferentially along the drive shaft. Rotation of the drive shaft causes the positioning components to engage with positioning seats at different positions. In this hard-limit positioning pin mechanism, the engagement of the positioning components and positioning seats forms a hard-limit structure. The arc-shaped design of the positioning head and positioning groove, combined with the preload of a spring, allows for precise engagement when the drive shaft drives the turntable to a preset position. This mechanism directly constrains the positional deviation of the turntable through mechanical hard limiting, effectively solving the problem of cumulative errors caused by speed fluctuations and component wear. It avoids misalignment between the forming cavity and the processing components, fundamentally eliminating uneven distribution of compressed biscuit raw materials and deformation of the shape.

This invention provides an ozone water dispersing device in which the anode and cathode are less susceptible to damage when an electrolysis unit with an anode and a cathode is used to generate ozone water. The ozone sprayer (1) comprises: a rain outlet (40) that discharges ozone water containing ozone in a rain-like manner and a mist outlet (50) that discharges ozone water in a mist-like manner; a water storage container (21); an electrolysis unit (23) having a flow path with an anode and a cathode and electrolyzing water flowing through the flow path to generate ozone water; a pump (22) that draws water from the container (21) and delivers it to the rain outlet (40) and the mist outlet (50) through a flow path (131); and a control unit that controls the electrolysis unit (23) and the pump (22). The control unit energizes the anode and cathode after a second time elapsed since the pump (22) begins operation.

The paper handle forming device comprises a former and a shaper; the former comprises a forming nozzle, and a guide structure is arranged on the side of the forming nozzle away from the shaper; the forming nozzle comprises a base part, and guide eaves are arranged on the two sides of the base part respectively, one of the guide eaves is outside the other guide eave, and a lap joint structure is formed between the two guide eaves; the guide structure comprises an arc-shaped guide plate, inner collection eaves are arranged on the two sides of the guide plate in the width direction respectively, the spacing between the two inner collection eaves is gradually reduced, each inner collection eave is connected with the corresponding guide eave, so that the inner collection eave and the guide eave form a continuous guide groove inside, and a wire tube is arranged on the upper surface of the guide plate and close to the two inner collection eaves. In the paper handle forming device, the former can form the paper strip into a structure with the two sides folded, and two paper ropes are covered in the structure, the shaper can further shape the product, and the produced handle product has high strength and good tensile capacity.

The utility model discloses a vanadium removal device for a sodium aluminate solution, which belongs to the technical field of vanadium removal, and comprises a dissolving tank, a solution pump, a settling tank and a stirring component, the stirring component is arranged in the dissolving tank, the top of the dissolving tank is respectively connected with a feeding pipe for supplying the sodium aluminate solution and a feeding pipe for feeding dry vanadium, a bottom outlet of the dissolving tank is connected with a settling tank through a conveying pipe, and a solution pump is mounted on the conveying pipe. The device has the beneficial effects that a sodium aluminate solution to be treated is fed into the dissolving tank and can be stirred by the stirring assembly after being added with dry vanadium, and then the fully stirred solution can be fed into the settling tank under the action of the solution pump to crystallize and settle the vanadium, so that the vanadium is removed, and meanwhile, the quality of the sodium aluminate solution is improved. Dry vanadium can be added into the dissolving tank for dissolving and mixing, so that the particle size and quality of vanadium ions in the solution are improved, vanadium crystals can be better separated out by the settling tank, and the vanadium removal effect of the device on the sodium aluminate solution is further improved.

This utility model provides a fireproof sealing structure for steel structures, belonging to the field of building engineering technology. It solves the technical problems of poor fire resistance, poor durability, and poor aesthetics in existing technologies. The fireproof sealing structure for steel structures includes a floor slab and connected steel beams. The floor slab and steel beams are respectively provided with cable perforations for floor cables and steel beam cables. Cables are threaded through these perforations, and annular movable gaps are provided between the cables and the perforations. Fireproof sealing rings for the floor slab and steel beams are respectively provided between the cable perforations and the cables to seal their respective annular movable gaps. Both the fireproof sealing rings have expansion joints that can seal and prevent the force of cable swaying from being transmitted to the respective floor slab and steel beam. This utility model has the advantages of strong fire resistance, good aesthetics, and high durability.

The utility model provides a tobacco fertilizing device relates to agricultural machinery technical field, including the lower end outside of elevating lever is provided with the sliding sleeve, elevating lever slidingly is arranged in the inside of sliding sleeve, the lower end fixed setting of sliding sleeve has the positioning board, the lower end position of elevating lever is provided with the positioning hole on the positioning board, the outside of elevating lever and be located the top fixed setting of sliding sleeve has the fixed sleeve, one side fixed setting of fixed sleeve has the treading board, the lower end of sliding sleeve and be located the outside of elevating lever is provided with the spring, the lower end fixed setting of spring is on the sliding sleeve, the bottom fixed setting of elevating lever has the sharp angle, the front side fixed setting of sliding sleeve has the fertilizer box, the bottom rotatory of fertilizer box is provided with the ration discharge wheel, is provided with the chute on ration discharge wheel. The utility model precision ration fertilization, promote the utilization rate of fertilizer, mechanization hole and fertilization integration, operation efficiency promotes, reduces the labor intensity, adapts to the complex working condition in field, and it is not easy to cause the damage to tobacco when walking and fertilizing.

The invention provides a high-shock-resistance low-precipitation phosphate ceramic structure adhesive which comprises the following components in parts by weight: 100 parts of aluminum dihydrogen phosphate, 8-15 parts of zinc oxide powder, 35-45 parts of flaky aluminum oxide powder, 5-10 parts of nano zirconium oxide powder and 0.5-2 parts of layered zirconium phosphate powder. The ceramic further comprises 0.5-2 parts of titanium oxide powder and 5-10 parts of spherical aluminum oxide powder. The invention also discloses a preparation method and application of the adhesive. The adhesive disclosed by the invention can work for a long time at 500 DEG C or below, has high strength retention rate at high temperature, and solves the problem of easy failure at high temperature; through the toughening design, the impact resistance and thermal shock resistance are remarkably improved, and cracking in use is effectively prevented; the paint has good stability to acid, alkali, solvents and other chemical media, and is suitable for partial corrosive environments; the ion precipitation rate is extremely low, and the strict requirements of the fields of biological medicine, food and the like on the material purity are met; and the curing temperature is moderate, a precise matrix is not easy to damage, and on-site construction and complex structure bonding are facilitated.

The utility model discloses a protective wear-resistant spoke which comprises a middle core layer provided with a reinforcing plate set. The reinforcing plate set comprises a first transverse reinforcing plate arranged in the middle of the middle core layer, second transverse reinforcing plates arranged on the two sides of the first transverse reinforcing plate, a first vertical reinforcing plate arranged in the middle of the middle core layer and second vertical reinforcing plates arranged on the two sides of the first vertical reinforcing plate, and a first hardening protection layer is arranged on the outer side of the middle core layer. Y-shaped reinforcing strips which are tightly arranged are arranged in the first hardening protection layer, an elastic protection layer is arranged on the outer side of the first hardening protection layer, a second hardening protection layer is arranged on the outer side of the elastic protection layer, and a wear-resistant layer is arranged on the outer side of the second hardening protection layer. The first transverse reinforcing plate, the second transverse reinforcing plate, the first vertical reinforcing plate and the second vertical reinforcing plate form a three-dimensional net-shaped support, so that the overall bending resistance of the spoke is improved; and by arranging the first hardening protection layer, the elastic protection layer and the second hardening protection layer, high protection performance is formed.

This utility model discloses a system based on refrigerant control in a temperature chamber, including a temperature chamber with a temperature sensor installed on the inner side wall. An internal refrigerant storage tank is installed inside the temperature chamber, and a pressure sensor is installed inside the internal refrigerant storage tank. The inlet of the internal refrigerant storage tank is connected to the outlet of an external refrigerant storage tank via a first connecting pipe, and the outlet of the internal refrigerant storage tank is connected to the inlet of the external refrigerant storage tank via a second connecting pipe. An inlet control valve is installed in the middle of the first connecting pipe, and the inlet control valve is electrically connected to the refrigerant core control system. An outlet control valve is installed in the middle of the second connecting pipe, and the outlet control valve is electrically connected to the refrigerant core control system. The refrigerant core control system is connected to the pressure sensor and the temperature sensor via data lines. This system requires no manual operation, has a high degree of automation, and is less prone to temperature chamber malfunctions and equipment damage.

According to the dismounting tool and the dismounting method, the reliability of grabbing parts during dismounting can be improved, and damage is reduced. According to the technical scheme, the disassembling tool comprises a grabbing component and a supporting component which are coaxially arranged, the grabbing component comprises a main body part and an elastic grabbing part, the elastic grabbing part is located at one end of the main body part, at least part of the supporting component is located in the grabbing component, and the supporting component is provided with a first end part; the supporting part can move in the axial direction to be located at a first position or a second position, the elastic grabbing part has a first state and a second state, and the maximum outer diameter of the first end is larger than the inner diameter of the elastic grabbing part in the first state; at the first position, the first end part and the elastic grabbing part are staggered in the axial direction, the elastic grabbing part is located in the first state, at the second position, the first end part is located in the elastic grabbing part, the elastic grabbing part is located in the second state, and the maximum inner diameter of the elastic grabbing part in the second state is larger than the maximum inner diameter of the elastic grabbing part in the first state.

The utility model discloses a kind of electric drive assembly high-pressure connector anti-loosening structure, it is related to high-pressure connector technical field, including connector male end and reinforcing assembly, the connector male end rear side is engaged and connected with connector female end, the reinforcing assembly is set to connector female end surface, and reinforcing assembly includes connecting groove, reinforcing groove, connecting protrusion, reinforcing protrusion, clamping groove, sealing groove, clamping strip, outer sealing frame, elastic sealing strip and magnetic attraction connecting layer, the connecting groove is set on connector female end upside, and connector female end upper surface is provided with reinforcing groove. The electric drive assembly high-pressure connector anti-loosening structure, by reinforcing assembly, so that the device can be inserted to the high-pressure connector Multiple reinforcement, can effectively prevent the male end and female end of connector from loosening, by protection component, so that the device uses multilayer protection mechanism, can greatly improve its own sealing and protective property, so that it is not easy to damage, to prolong its service time.

The utility model discloses a discharge flange, a valve box assembly and a pump, and relates to the fields of oil gas, mines and the like. A discharge flange is used for being connected with a valve box of a fluid end in a matched mode, and the discharge flange is provided with at least two second channel units and at least two third channel units. One ends of the at least two second channel units are communicated with the third channel unit, and the other ends of the at least two second channel units are used for being correspondingly communicated with a first liquid discharging channel arranged on the valve box. The problems that disassembly and assembly of the discharge pipeline and the valve box are not changed, and the bearing load is large can be solved.

The application discloses a kind of invisible optical cable and preparation method thereof, belong to optical cable technical field, including multiple optical fibers, and sleeve is arranged at the periphery of multiple optical fibers, and sleeve is prepared using transparent material.The woven yarn is further provided in the sleeve in the application, and the woven yarn is in mesh structure, and multiple optical fibers are sequentially and side by side arranged in the mesh structure of woven yarn.In the application, the arrangement order of each optical fiber is naturally limited by the mesh structure of woven yarn, and each optical fiber can be accurately distinguished by observing the position of optical fiber in the mesh during construction, without any color marking or special identification equipment, especially suitable for multi-core invisible optical cable.The yarn of woven yarn is extremely thin, and the mesh structure is invisible under normal visibility, the overall transparency of optical cable is high, and it is perfectly integrated with indoor environment, maintaining excellent invisible effect.

This utility model belongs to the field of environmental protection equipment technology, and provides a bag filter dust collector unit and a bag filter dust collector. The bag filter dust collector unit includes a tube sheet, filter bags, multiple impact plates, a rapping assembly, and a drive assembly. When dust removal is required, the drive assembly drives the rapping shaft to rotate, which in turn drives the rapping plates and rapping hammers to rotate. The rapping hammers first abut against one of the impact plates. As the rapping shaft continues to rotate, the rapping plates are subjected to force and bend, accumulating elastic potential energy. This continues until the plates detach from the impact plates and move to the next impact plate. The rapping hammers strike the impact plate, and the vibration received by the impact plate is transmitted to the bag body through the frame, causing the bag body to vibrate, thereby achieving the dust removal effect. Throughout the process, the rapping hammers do not contact the bag body, therefore, the bag body will not be damaged. The bag filter dust collector provided by this utility model includes the above-mentioned bag filter dust collector unit.

This application relates to the field of eyewear technology, and more particularly to a rotating assembly for eyeglasses and eyeglasses. The rotating assembly includes: a frame base for connection to a frame; a temple base for connection to the temples, and the temple base is rotatably connected to the frame base. When the temples are subjected to force, the temple base can be rotated outward or folded relative to the frame base; and an elastic structure disposed on one of the frame base and the temple base. When the temple base rotates outward relative to the frame base to a first preset angle, the elastic structure presses against the other, and the frame base limits the rotation of the temple base. The first preset angle is greater than 90°. With this rotating assembly, the temple base can rotate outward relative to the frame base to a first preset angle greater than 90°, making the eyeglasses suitable for users with larger head circumferences, less likely to damage the temples, and the elastic structure provides a restoring force to the temple base, allowing the temples to hold the user's head, improving the stability and comfort of wearing the eyeglasses.

The utility model discloses a kind of visual inspection machines for detecting lens cutoff line, it includes rack;Rack outside cover is equipped with light shield, the top surface of rack is connected with flat plate;The mounting plate fixedly connected on rack is provided above flat plate, vertical downward stepping motor is connected in mounting plate middle part, driving shaft of stepping motor is fixedly connected with the rotating disc that is horizontally arranged, interval is equipped between rotating disc and flat plate, the edge of rotating disc is equipped with multiple annularly evenly distributed placement holes;Light source is connected with the position of the position of one of placement holes directly above on mounting plate, and light source is arranged towards placement hole;The position of light source directly below is equipped with opening on flat plate, light-illuminating plate is arranged below flat plate, and light-illuminating plate is connected in rack with horizontal shape, camera is connected with the position of light-illuminating plate on flat plate bottom surface, and camera is arranged towards light-illuminating plate.The utility model not only can reduce detection cost, still have the advantages that detection efficiency is higher, detection accuracy is higher and application range is wider.

The utility model relates to engineering car carriage technical field especially relates to a sound absorption felt noise reduction excavator chamber. Its technical scheme includes machine room main part and installs the sound absorption felt main body in the four walls of machine room main part, the inner wall of machine room main part is equipped with multiple groups for the locking piece of sound absorption felt main body installation, the locking piece includes with the fixed connection of the inner wall of machine room main part's limiting post, the extruding block of setting installation is equipped with on the limiting post, the top of extruding block is connected with the fixed frame that is arranged perpendicularly with it, the fixed frame is slidably arranged with the sliding block, the threaded column is rotatably connected with screw thread on the sliding block, the side of sound absorption felt main body is equipped with multiple groups with the limiting slot position of threaded column correspondence. The utility model structure is convenient for dismantling, and the sound absorption felt is cleaned, replaced and the inner wall condition is checked in the later period, ensures that the sound absorption felt plays the role of noise reduction stably for a long time, creates the quiet, comfortable working environment for the operator.