A quality detection device for road engineering

Abstract

The application discloses a quality detection device for road engineering and belongs to the technical field of sampling equipment, which comprises a supporting frame, an adjusting mechanism is internally installed in the supporting frame, a supporting seat is slidably installed at the right side of the supporting frame, a sampling mechanism is installed on the supporting seat, the adjusting mechanism is used for driving the sampling mechanism to move up and down, the sampling mechanism comprises a sampling rotating drum, a drill bit is fixedly installed at the bottom of the sampling rotating drum, a sampling box is inserted into the sampling rotating drum, a material taking mechanism is arranged outside the sampling rotating drum, the material taking mechanism is used for pushing the sampling box upwards and making the sampling box separate from the sampling rotating drum, the sampling box can be driven to separate from the sampling rotating drum, the material taking operation is quick and convenient, time and labor are saved, the continuity of sampling detection work is effectively improved, and the technical effect of improving the detection work efficiency is achieved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of sampling equipment, and particularly relates to a quality detection device for road engineering. BACKGROUND

[0002] Construction engineering quality detection refers to an activity of testing and determining the quality characteristics of materials, components, equipment, and engineering entity quality and use function of a construction project according to mandatory standards and design documents of engineering construction, which is an important work of testing the foundation, building materials, construction technology and building structure related to buildings in the whole construction process to ensure the safety of built, under-construction and to-be-constructed building projects, and is often required to detect the built road engineering to ensure safe production or to understand the safety and reliability of the structure.

[0003] Therefore, a sampling device for road engineering pavement quality detection is disclosed in Chinese Patent No. CN220794691U, which comprises a base, a first support fixedly arranged on one side of the top end of the base, a second support fixedly arranged on the other side of the top end of the base away from the first support, a transmission structure arranged above the groove of the first support, a torsional spring sleeved on both ends of the rotating shaft where the handrail is located, and a fixing structure arranged at the bottom end of the square groove. The use of the foot pedal in cooperation with the handrail can drive the handrail of the cart to move up and down, and the handrail can be stored when not in use to prevent collision by the staff. The drill drills the road, collects the road, and the materials drilled from the road enter the collection barrel through the through hole, and the sample in the collection barrel is taken out through the through hole for detection.

[0004] However, the above-mentioned device requires the staff to put their hands into the through hole to the inside of the sampling cylinder to take out the sample, which is time-consuming and laborious, consumes a lot of working time, affects the continuity of the next sampling work, and the sample is not flexible to take out, thus easily affecting the working efficiency of sampling detection. SUMMARY

[0005] In view of the problems in the prior art, the application provides a quality detection device for road engineering, which has the advantages of being able to drive the sampling box to separate from the sampling rotating drum, the sampling operation is quick and convenient, time and labor are saved, the continuity of the sampling detection work is effectively improved, and the detection work efficiency is improved, solving the problems in the prior art that the staff need to put their hands into the through hole to the inside of the sampling cylinder to take out the sample, which is time-consuming and laborious, consumes a lot of working time, affects the continuity of the next sampling work, and the sample is not flexible to take out, thus easily affecting the working efficiency of sampling detection.

[0006] The application is achieved as follows: a quality detection device for road engineering, comprising a support frame, an adjusting mechanism is installed inside the support frame, a support base is slidingly installed on the right side of the support frame, a sampling mechanism is installed on the support base, the adjusting mechanism is used to drive the sampling mechanism to move up and down, the sampling mechanism comprises a sampling rotating drum, a drill bit is fixedly installed at the bottom of the sampling rotating drum, a sampling box is inserted into the inside of the sampling rotating drum, a material taking mechanism is sleeved on the outside of the sampling rotating drum, and the material taking mechanism is used to push the sampling box upwards and make it separate from the sampling rotating drum.

[0007] Through the close cooperation among the adjusting mechanism, the sampling mechanism and the material taking mechanism, the sampling rotating drum can be driven to move and rotate, the sampling work can be carried out, the sampling box can be driven to lift upwards and separate from the sampling rotating drum after the sampling is completed, the material taking operation is quick and convenient, time and labor are saved, the continuity of the sampling detection work is effectively improved, the detection work efficiency is improved, the sampling rotating drum can be conveniently scraped and cleaned, the blocking phenomenon is effectively avoided, the sampling quality and effect are improved, and the detection work efficiency is further improved.

[0008] As preferred, the adjusting mechanism comprises a lifting lead screw, the upper and lower ends of the lifting lead screw are connected to the inside of the support frame through bearings, a stepping motor is fixedly installed at the inner bottom of the support frame, the output end of the stepping motor is fixedly connected with the lower end of the lifting lead screw, a guide block is threadedly sleeved on the lifting lead screw, and a guide groove is formed in the right side of the support frame, and the guide block slides along the guide groove.

[0009] Through the above arrangement, the stepping motor can be started to drive the lifting lead screw to rotate, and then drive the guide block to move up and down along the lifting lead screw and the guide groove, which is convenient to use.

[0010] As preferred, the support base is fixedly connected to the end of the guide block, a first rotating drum, a second rotating drum and a gear are sequentially connected to the inside of the support base through bearings from left to right, a gear ring is fixedly sleeved on the outer wall of the first rotating drum and the second rotating drum, the gear rings are meshingly connected with each other and with the gear, the second rotating drum is fixedly sleeved on the outer wall of the sampling rotating drum, a rotating motor is fixedly installed at the top of the support base, and the output end of the rotating motor is fixedly connected with the middle shaft of the gear.

[0011] Through the above arrangement, the guide block can drive the support base to move up and down, and then drive the sampling mechanism on the support base to adjust the up-and-down moving position, which is convenient to use, and through the meshing transmission principle of the gear and the gear ring, the second rotating drum and the first rotating drum can be driven to synchronously rotate when the rotating motor is started, the second rotating drum can drive the sampling rotating drum to rotate, and then drive the drill bit to rotate, so that the drill bit moves downwards and rotates to realize the sampling work on the road.

[0012] As the application is preferred, the taking mechanism comprises a lifting push ring, the lifting push ring is sleeved on the outer wall of the sampling drum, one end of the lifting push ring is fixedly connected with a sliding block through a connecting block, one end of the sliding block slides along a guide groove, the right side wall of the support frame is fixedly connected with a support plate, the support plate is connected with a lifting screw through a bearing, the other end of the sliding block is threadedly sleeved on the lifting screw, and the upper portion of the lifting screw penetrates through the support base and the first drum.

[0013] Through the arrangement, the stable installation of the lifting push ring is facilitated, when the lifting screw rotates, the sliding block is driven to move up and down, then the sliding block drives the lifting push ring to move up and down, and the lifting push ring is driven to move up and down along the sampling drum, so that the lifting push ring is conveniently lowered to the bottom of the sampling box, and the sampling box is conveniently pushed upward until the sampling box is separated from the sampling drum, and the rapid taking operation is realized.

[0014] As the application is preferred, the inner wall of the first drum is fixedly connected with a push plate, and the outer wall of the lifting screw is fixedly connected with a push block.

[0015] Through the arrangement, the rotation and stop of the lifting screw are controlled through the abutment and separation between the push plate and the push block, that is, the movement and stop of the lifting push ring are controlled, and the use is convenient and flexible, and the specific operation is that, when the sampling work is performed, the support base and the sampling mechanism are driven to move downward as a whole through the cooperation of the lifting screw and the guide block, the push plate of the first drum is driven to move downward and separate from the push block, the second drum, the sampling drum and the first drum are driven to rotate by starting the rotary motor, the sampling drum is rotated and lowered to perform the sampling work, at this time, since the push plate and the push block are separated, the first drum will not drive the lifting screw to rotate, and then the lifting push ring remains in the stop state and will not affect the sampling work, and the use is convenient, when the taking work is performed, the sampling drum is stopped from rotating and moves upward to reset, the push plate and the push block are reset to abut, the second drum, the sampling drum and the first drum are driven to rotate by starting the rotary motor, the first drum can drive the lifting screw to rotate, and then the up-down movement operation of the lifting push ring is realized, and finally the lifting push ring pushes the sampling box upward to perform the taking work.

[0016] As the application is preferred, sampling channels are formed in the front and rear side walls of the sampling drum, rubber scraping strips are fixedly connected to the inner wall of the lifting push ring in a uniform distribution, and the end portions of the rubber scraping strips extend into the sampling channels.

[0017] Through the arrangement, when sampling work is carried out, the road fragments can conveniently pass through the sampling channel to enter the inside of the sampling drum, and then enter the sampling box, so that the sample collection is facilitated; when the sampling channel is blocked, the lifting push ring moves up and down along the sampling drum, and then drives the rubber scraping strip to move up and down along the sampling channel, so that the scraping and cleaning operation is realized, the blocking phenomenon at the sampling channel is effectively avoided, the sampling quality and the working efficiency are improved, and then the detection efficiency is improved.

[0018] Preferably, the folding plates are rotatably installed on the front and rear side walls of the sampling box, extend into the corresponding sampling channels, and the lifting push ring slides against the folding plates.

[0019] Through the arrangement, the lifting push ring pushes the sampling box upward by abutting against the folding plates, and then the sampling box is conveniently taken out from the inside of the sampling drum, the sampling is fast and convenient, time and labor are saved, the continuity of the next sampling detection work is ensured, and the detection work efficiency is further improved.

[0020] Preferably, the folding plates are rotatably installed on the front and rear side walls of the sampling box, extend into the corresponding sampling channels, and the lifting push ring slides against the folding plates.

[0021] Through the arrangement, the folding plates are rotatably installed, when the lifting push ring lifts the folding plates, the folding plates are limited by the limit blocks, and then the lifting push ring stably pushes the sampling box upward through the folding plates, so that the sampling work stability is high and the use is convenient.

[0022] Preferably, the folding plates are rotatably installed on the front and rear side walls of the sampling box, extend into the corresponding sampling channels, and the lifting push ring slides against the folding plates.

[0023] Through the arrangement, the folding plates are rotatably installed, when the lifting push ring lifts the folding plates, the folding plates are limited by the limit blocks, and then the lifting push ring stably pushes the sampling box upward through the folding plates, so that the sampling work stability is high and the use is convenient.

[0024] Compared with the prior art, the beneficial effects of the present application are as follows: through the close cooperation between the adjusting mechanism, the sampling mechanism and the material taking mechanism, the first rotating drum, the push plate and the push block facilitate the control of the rotation and stop of the lifting screw rod, in turn facilitating the control of the movement and stop of the lifting push ring, convenient and flexible to use, the upward and downward moving push ring can cooperate with the folding plate on one hand to drive the sampling box to be lifted upward and separated from the sampling rotating drum, the material taking operation is fast and convenient, time and labor are saved, the continuity of the sampling and detection work is effectively improved, the detection work efficiency is improved, on the other hand, the sampling channel can be scraped and cleaned, the blocking phenomenon at the sampling channel is effectively avoided, the sampling quality and effect are improved, and the detection work efficiency is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is the overall structure schematic diagram provided by the embodiment of the present application;

[0026] Figure 2 is the support seat top section structure schematic diagram provided by the embodiment of the present application;

[0027] Figure 3 is the sampling rotating drum right side section structure schematic diagram provided by the embodiment of the present application;

[0028] Figure 4 is the Figure 3 enlarged structure schematic diagram at A of the embodiment of the present application;

[0029] Figure 5 is the sampling box structure schematic diagram provided by the embodiment of the present application;

[0030] Figure 6 is the lifting push ring structure schematic diagram provided by the embodiment of the present application.

[0031] In the figure: 1, support frame; 101, guide groove; 102, support plate; 2, lifting screw rod; 201, stepping motor; 202, guide block; 203, support seat; 3, first rotating drum; 301, push plate; 4, second rotating drum; 401, gear ring; 402, gear; 403, rotating motor; 5, sampling rotating drum; 501, sampling channel; 502, drill bit; 503, magnet piece; 6, sampling box; 601, handle; 602, folding plate; 603, spring; 604, stop block; 605, support shaft; 606, fixed block; 7, lifting push ring; 701, rubber scraping strip; 702, connecting block; 703, sliding block; 8, lifting screw rod; 801, push block. DETAILED DESCRIPTION

[0032] In order to further understand the invention content, characteristics and effects of the present application, the following embodiments are exemplified and described in detail as follows with the aid of the drawings.

[0033] The structure of the present application will be described in detail below with reference to the drawings.

[0034] Reference Figures 1 to 6 As shown in the drawings, the quality detection device for road engineering provided by the embodiment of the present application comprises a support frame 1, an adjusting mechanism is installed inside the support frame 1, a support seat 203 is slidingly installed on the right side of the support frame 1, a sampling mechanism is installed on the support seat 203, the adjusting mechanism is used to drive the sampling mechanism to move up and down, the sampling mechanism comprises a sampling rotating drum 5, a drill bit 502 is fixedly installed at the bottom of the sampling rotating drum 5, a sampling box 6 is inserted into the inside of the sampling rotating drum 5, and a material taking mechanism is sleeved on the outside of the sampling rotating drum 5, which is used to push the sampling box 6 upwards and make it separate from the sampling rotating drum 5.

[0035] By the close cooperation between the adjusting mechanism, the sampling mechanism and the material taking mechanism, the sampling rotating drum 5 can be driven to move and rotate, the sampling work can be carried out, the sampling box 6 can be driven to lift upwards and separate from the sampling rotating drum 5 after the sampling is completed, the material taking operation is fast and convenient, time and labor are saved, the continuity of the sampling detection work is effectively improved, the detection work efficiency is improved, the sampling rotating drum 5 can be conveniently scraped and cleaned, the blocking phenomenon is effectively avoided, the sampling quality and effect are improved, and the detection work efficiency is further improved.

[0036] Specifically, the adjusting mechanism comprises a lifting lead screw 2, the upper and lower ends of the lifting lead screw 2 are connected to the inside of the support frame 1 through bearings, a stepping motor 201 is fixedly installed at the inner bottom of the support frame 1, the output end of the stepping motor 201 is fixedly connected with the lower end of the lifting lead screw 2, a guide block 202 is threadedly sleeved on the lifting lead screw 2, a guide groove 101 is formed in the right side of the support frame 1, and the guide block 202 slides along the guide groove 101.

[0037] By the above scheme, the stepping motor 201 can be started to drive the lifting lead screw 2 to rotate, and then drive the guide block 202 to move up and down along the lifting lead screw 2 and the guide groove 101, which is convenient to use.

[0038] Specifically, the support seat 203 is fixedly connected to the end of the guide block 202, a first rotating drum 3, a second rotating drum 4 and a gear 402 are sequentially connected through bearings in the inside of the support seat 203 from left to right, tooth rings 401 are sleeved and fixed on the outer walls of the first rotating drum 3 and the second rotating drum 4, the tooth rings 401 are in meshing connection with each other and with the gear 402, the second rotating drum 4 is sleeved and fixed on the outer wall of the sampling rotating drum 5, a rotating motor 403 is fixedly installed on the top of the support seat 203, and the output end of the rotating motor 403 is fixedly connected with the middle shaft part of the gear 402.

[0039] With the above scheme, the guide block 202 drives the support seat 203 to move up and down, and then drives the sampling mechanism on the support seat 203 to adjust the up and down movement position, which is convenient to use. Through the meshing transmission principle of the gear 402 and the gear ring 401, when the rotary motor 403 is started, the second rotating drum 4 and the first rotating drum 3 can be driven to rotate synchronously, and the second rotating drum 4 can drive the sampling rotating drum 5 to rotate, and then drive the drill bit 502 to rotate, so that the drill bit 502 moves downward and rotates to realize the road opening and sampling work.

[0040] Specifically, the sampling mechanism comprises a lifting push ring 7, the lifting push ring 7 is sleeved on the outer wall of the sampling rotating drum 5, one end of the lifting push ring 7 is fixedly connected with a sliding block 703 through a connecting block 702, one end of the sliding block 703 slides along the guide groove 101, the right side wall of the support frame 1 is fixedly connected with a support plate 102, the support plate 102 is connected with a lifting screw 8 through a bearing, the other end of the sliding block 703 is threadedly sleeved on the lifting screw 8, and the upper portion of the lifting screw 8 penetrates the support seat 203 and the first rotating drum 3.

[0041] With the above scheme, the lifting push ring 7 is stably installed, when the lifting screw 8 rotates, the sliding block 703 is driven to move up and down, then the sliding block 703 drives the lifting push ring 7 to move up and down, and then the lifting push ring 7 moves up and down along the sampling rotating drum 5, so that the lifting push ring 7 moves downward to the bottom of the sampling box 6, and the sampling box 6 is pushed upward until the sampling box 6 is separated from the sampling rotating drum 5, and the fast sampling operation is realized.

[0042] Specifically, the inner wall of the first rotating drum 3 is fixedly connected with a push plate 301, the outer wall of the lifting screw 8 is fixedly connected with a push block 801, and the push plate 301 abuts against the push block 801.

[0043] With the above scheme, by the fit and disengagement between the push plate 301 and the push block 801, the rotation and stop of the lifting screw 8 are facilitated, that is, the movement and stop of the lifting push ring 7 are controlled, and the use is convenient and flexible. The specific operation is that when the sampling work is performed, the lifting screw 2 and the guide block 202 cooperate to drive the support seat 203 and the sampling mechanism to move downward as a whole, and drive the push plate 301 of the first rotating drum 3 to move downward and disengage from the push block 801, and then the rotating motor 403 is started to drive the second rotating drum 4, the sampling rotating drum 5 and the first rotating drum 3 to rotate, so that the sampling rotating drum 5 rotates and moves downward to perform the sampling work. At this time, since the push plate 301 and the push block 801 are separated, the first rotating drum 3 will not drive the lifting screw 8 to rotate, and then the lifting push ring 7 remains in a stopped state and does not affect the sampling work, and the use is convenient. When the sampling work is performed, the sampling rotating drum 5 stops rotating and moves upward to reset, drives the push plate 301 and the push block 801 to reset and butt joint, and then the rotating motor 403 is started to drive the second rotating drum 4, the sampling rotating drum 5 and the first rotating drum 3 to rotate, so that the first rotating drum 3 can drive the lifting screw 8 to rotate, and then the up-down movement operation of the lifting push ring 7 is realized, and finally the lifting push ring 7 upwardly pushes the sampling box 6 to perform the sampling work.

[0044] Specifically, the front and rear side walls of the sampling rotating drum 5 are provided with sampling channels 501, and the inner wall of the lifting push ring 7 is fixedly connected with uniformly distributed rubber scraping strips 701, and the ends of the rubber scraping strips 701 extend into the sampling channels 501.

[0045] With the above scheme, when the sampling work is performed, the road fragments can conveniently pass through the sampling channels 501 into the inside of the sampling rotating drum 5, and then into the sampling box 6, so as to facilitate the collection of the sample. When the sampling channels 501 are blocked, the lifting push ring 7 moves up and down along the sampling rotating drum 5, and then drives the rubber scraping strips 701 to move up and down along the sampling channels 501, so as to realize the scraping and cleaning operation, effectively avoid the blocking phenomenon of the sampling channels 501, improve the sampling quality and work efficiency, and then facilitate to improve the detection efficiency.

[0046] Specifically, the front and rear side walls of the sampling box 6 are rotatably provided with folding plates 602, the folding plates 602 extend into the corresponding sampling channels 501, and the lifting push ring 7 slides against the folding plates 602.

[0047] With the above scheme, the lifting push ring 7 conveniently pushes the sampling box 6 upward by abutting against the folding plates 602, and then facilitates to take out the sampling box 6 from the inside of the sampling rotating drum 5, so as to quickly and conveniently take the sample, save time and effort, ensure the continuity of the next sampling and detection work, and further improve the detection work efficiency.

[0048] Specific, the outer wall of the sampling box 6 is fixedly connected with a fixed block 606, the fixed block 606 is connected with a supporting shaft 605 through a bearing, the upper end of the folding plate 602 is fixedly connected with the supporting shaft 605, the outer wall of the sampling box 6 above the supporting shaft 605 is fixedly connected with a stop block 604, and the stop block 604 is clamped on the folding plate 602.

[0049] By adopting the above scheme, the folding plate 602 is rotatably installed, when the lifting push ring 7 lifts the folding plate 602, the folding plate 602 is limited by the stop block 604, and then the lifting push ring 7 stably pushes the sampling box 6 upwards through the folding plate 602, so that the sampling work is high in stability and convenient to use.

[0050] Specifically, the lower end inner wall of the folding plate 602 and the outer wall of the sampling box 6 are fixedly connected through the spring 603, the top of the sampling box 6 is fixedly connected with a handle 601, the bottom of the sampling box 6 and the inner bottom of the sampling cylinder 5 are fixedly connected with magnet pieces 503, and the magnet pieces 503 are fixedly connected with each other.

[0051] By adopting the above scheme, the folding plate 602 is elastically folded, contracted and reset, when the sampling work is performed, the lifting push ring 7 moves downwards and extrudes the folding plate 602, so that the folding plate 602 is contracted into the sampling channels 501 on both sides of the sampling box 6, until the lifting push ring 7 moves to the bottom of the folding plate 602 and is separated, at this time, the folding plate 602 is elastically reset, then the lifting push ring 7 moves upwards, abuts against the folding plate 602, and pushes the sampling box 6 upwards, so that the magnet pieces 503 are separated, when the sampling box 6 reaches the top of the sampling cylinder 5, the sampling box 6 is extracted upwards through the handle 601, and the sampling box 6 is taken off the sampling cylinder 5, so that the sampling is convenient, fast and convenient.

[0052] The working principle of the present application is as follows:

[0053] In use, when the sampling work is performed, the supporting seat 203 and the sampling mechanism are driven to move downwards by the cooperation of the lifting lead screw 2 and the guide block 202, the push plate 301 of the first cylinder 3 is driven to move downwards and is separated from the push block 801, the second cylinder 4, the sampling cylinder 5 and the first cylinder 3 are driven to rotate by starting the rotating motor 403, the sampling cylinder 5 is rotated and moved downwards, the drill bit 502 is driven to dig a road for sampling work, at this time, since the push plate 301 and the push block 801 are separated, the first cylinder 3 does not drive the lifting screw 8 to rotate, so that the lifting push ring 7 remains in a stopped state, and then the road debris enters the sampling box 6 through the sampling channels 501.

[0054] When the sampling work is carried out, the sampling drum 5 stops rotating and moves upward to reset, the push plate 301 and the push block 801 are reset and abutted, the rotating motor 403 is started again to drive the second drum 4, the sampling drum 5 and the first drum 3 to rotate, the first drum 3 can drive the lifting screw 8 to rotate, the lifting push ring 7 moves downward and extrudes the folding plate 602, so that the folding plate 602 is retracted into the sampling channel 501, until the lifting push ring 7 moves to the bottom of the folding plate 602 and is separated, at this time the folding plate 602 is elastically reset, then the lifting push ring 7 moves upward, that is, the folding plate 602 is pushed, and the sampling box 6 is pushed upward, when the sampling box 6 reaches the top of the sampling drum 5, the sampling box 6 is taken out of the sampling drum 5 by lifting the handle 601 upward, the sampling box 6 is taken out conveniently and quickly, at the same time, the rubber scraping strip 701 moves up and down along the sampling channel 501 to perform the scraping and cleaning operation, effectively avoiding the blocking phenomenon of the sampling channel 501, and improving the sampling quality and work efficiency.

[0055] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0056] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A quality detection device for road engineering, comprising a support frame, characterized in that: The inside of the support frame is provided with an adjusting mechanism, the right side of the support frame is slidably provided with a support seat, the support seat is provided with a sampling mechanism, the adjusting mechanism drives the sampling mechanism to move up and down, the sampling mechanism comprises a sampling drum, a drill bit is fixedly installed at the bottom of the sampling drum, a sampling box is inserted into the sampling drum, a material taking mechanism is arranged on the outer wall of the sampling drum, the material taking mechanism is used for pushing the sampling box upwards and making it separate from the sampling drum, the adjusting mechanism comprises a lifting screw, the upper and lower ends of the lifting screw are connected to the inside of the support frame through bearings, a stepping motor is fixedly installed at the inner bottom of the support frame, the output end of the stepping motor is fixedly connected with the lower end of the lifting screw, a guide block is threadedly sleeved on the lifting screw, a guide groove is formed in the right side of the support frame, the guide block slides along the guide groove, the support seat is fixedly connected to the end of the guide block, a first drum, a second drum and a gear are sequentially connected to the inside of the support seat through bearings from left to right, a tooth ring is fixedly sleeved on the outer wall of the first drum and the second drum, the tooth rings are in meshing connection with each other and with the gear, the second drum is fixedly sleeved on the outer wall of the sampling drum, a rotating motor is fixedly installed at the top of the support seat, the output end of the rotating motor is fixedly connected with the central shaft of the gear, the material taking mechanism comprises a lifting push ring, the lifting push ring is sleeved on the outer wall of the sampling drum, one end of the lifting push ring is fixedly connected with a sliding block through a connecting block, one end of the sliding block slides along the guide groove, support plates are fixedly connected to the right side walls of the support frame, lifting screws are connected to the support plates through bearings, the other end of the sliding block is threadedly sleeved on the lifting screw, and the upper part of the lifting screw penetrates through the support seat and the first drum.

2. A quality detection device for road engineering as claimed in claim 1, wherein: A push plate is fixedly connected to the inner wall of the first drum, and a push block is fixedly connected to the outer wall of the lifting screw.

3. A quality detection device for road engineering as claimed in claim 1, wherein: Sampling channels are formed in the front and rear side walls of the sampling drum, and rubber scraping strips are fixedly connected to the inner wall of the lifting push ring, the ends of the rubber scraping strips extend into the sampling channels.

4. A quality detection device for road engineering as claimed in claim 3, wherein: Folding plates are rotatably installed on the front and rear side walls of the sampling box, the folding plates extend into the corresponding sampling channels, and the lifting push ring slidably abuts against the folding plates.

5. A quality detection device for road engineering as claimed in claim 4, wherein: Fixed blocks are fixedly connected to the outer wall of the sampling box, support shafts are connected to the fixed blocks through bearings, the upper ends of the folding plates are fixedly sleeved on the support shafts, stop blocks are fixedly connected to the outer wall of the corresponding sampling box above the support shafts, and the stop blocks are clamped on the folding plates.

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