A field sampling tool for engineering cost surveying

Abstract

This invention discloses a field sampling tool for engineering cost surveying, comprising a screening and filling mechanism and a driving and sealing mechanism. The screening and filling mechanism includes an equipment cylinder, the top of which is fixedly connected to a conical ring seat. An annular groove is formed inside the conical ring seat, and an annular slider is slidably installed on the inner side of the annular groove. This invention relates to the field of engineering cost surveying sampling technology. This field sampling tool for engineering cost surveying, by combining the screening and filling mechanism and the driving and sealing mechanism, allows sand to be filled inside a filter cylinder. A motor drives the rotating frame, the sealing cylinder, and the lifting empty cylinder to rotate, thereby separating the sand from the waste, remixing it, and pressing it into the inner side of the sample storage cylinder. This ensures that the sample volume inside several sample storage cylinders is approximately the same, and subsequent direct testing is possible, effectively improving sand sampling efficiency.

Description

Technical Field

[0001] This invention relates to the field of engineering surveying and sampling technology, specifically to a field sampling tool for engineering cost surveying. Background Technology

[0002] Construction cost refers to the construction expenses that constitute the project's estimated or actual expenditures during the construction period. It involves the comprehensive application of knowledge and skills from management, economics, and engineering technology to predict, plan, control, calculate, analyze, and evaluate construction costs.

[0003] In current engineering cost surveys, to facilitate subsequent quality control, accurate cost calculation, compliance, and traceability, and to avoid potential project problems and cost disputes, it is usually necessary to sample various materials and test their actual performance during the survey. This is a crucial pre-control step in engineering cost surveys. However, while sampling steel reinforcement is very convenient, requiring only cutting, sand and gravel, especially sand, are essential components of core building materials such as concrete and mortar. Their particle size distribution, mud content, and impurity content directly affect the strength, durability, and safety of building structures, thus significantly impacting project costs. Therefore, the quality of on-site sand sampling directly determines the objectivity and accuracy of the test results, making it a critical step that cannot be ignored in engineering cost surveys. However, currently, on-site sand sampling in engineering cost surveys still relies on traditional manual methods, which have many technical defects and procedural pain points, such as:

[0004] 1. The existing sampling process requires staff to dig sand samples at different locations in the sand pile, usually eight or more points. The amount of each sample dug by hand with a shovel depends entirely on experience. The weight difference between samples at different points can be 20%-50%. After mixing, it is difficult to ensure the overall uniformity. This ultimately leads to deviations in test results, such as mud content and particle size distribution, from the actual sand properties, which may cause misjudgments in engineering cost accounting.

[0005] 2. Low impurity removal efficiency and high labor intensity. The core requirement of sand testing is to retain the original particle size distribution of the sand, that is, coarse and fine screening is not allowed, but large particles such as branches, plastic fragments, and stones mixed in must be removed to avoid impurities affecting the accuracy of the test. For example, impurities can lead to an overestimation of the mud content. Currently, impurity removal relies entirely on manual picking, which consumes a lot of time and seriously affects the progress of the survey. At the same time, incomplete picking results in some impurities remaining, affecting the accuracy of the test results. In addition, the labor intensity is high. On-site surveys are usually conducted in outdoor environments, and staff need to bend over and bend down for a long time to pick, especially in harsh weather conditions such as high temperature and strong wind, which can easily cause fatigue and further reduce the efficiency and quality of picking.

[0006] 3. Sample management is cumbersome and prone to confusion and contamination. The mixed sand is manually packed into plastic bags or ordinary containers, and each sample must be labeled with information such as the sampling point, time, and sand pile number. However, in the field environment, such as dust and rain, the labels are easily blurred or fall off, making it impossible to distinguish the source of different samples during subsequent testing. If samples from different sand piles are mixed up, the test results may not match the actual material, leading to errors in mix design and cost waste. Furthermore, it is inconvenient to carry, as multiple sample containers must be carried separately, which is prone to collisions and leaks. Especially in complex road conditions at the construction site, such as muddy or bumpy conditions, sample loss will occur, further increasing the workload and time costs.

[0007] 4. The process is fragmented and the sampling efficiency is low. The existing sand sampling process involves five independent steps: point excavation, manual mixing, impurity sorting, packaging and labeling, and transportation. There is a lack of integrated tools to support each step. The entire process relies entirely on manual operation and lacks mechanical auxiliary equipment. It cannot meet the needs of modern engineering cost surveying for high efficiency and accuracy. This is in stark contrast to the standardized sampling process for other materials such as steel bars and cement. For example, steel bar sampling can be completed quickly by a special cutting machine, and cement sampling has standardized samplers.

[0008] Therefore, an integrated, automated, and standardized on-site sampling tool is designed to solve problems such as poor sampling uniformity, low impurity removal efficiency, cumbersome sample management, and low process efficiency in existing technologies, providing reliable technical support for engineering cost surveying. Summary of the Invention

[0009] To address the shortcomings of existing technologies, this invention provides a field sampling tool for engineering cost surveying, which solves the problems of low efficiency and quality in existing sand sampling and cumbersome subsequent operations.

[0010] To achieve the above objectives, the present invention provides the following technical solution: a field sampling tool for engineering cost surveying, comprising a screening and filling mechanism and a driving and sealing mechanism. The screening and filling mechanism includes a device cylinder, a conical ring seat fixedly connected to the top of the device cylinder, an annular groove formed inside the conical ring seat, an annular slider slidably mounted on the inner side of the annular groove, a rotating frame fixedly connected to the inner side of the annular slider, a polygonal inner ring fixedly connected to the inner side of the rotating frame, arc-shaped slots formed on both sides of the top of the rotating frame, a filter screen cylinder provided inside the rotating frame, and a multi-faceted outer ring fixedly connected to the surface of the filter screen cylinder for use with the polygonal inner ring. The driving and sealing mechanism is located at the upper part of the device cylinder.

[0011] Preferably, a first conical drain seat and a second conical drain seat are fixedly connected to the upper and lower parts of the inner wall of the equipment cylinder, respectively. Retraction boxes are fixedly connected to both sides, front and rear of the inner cavity of the equipment cylinder. The surface of the retraction box is provided with a vertical sliding groove, and the retraction box is located above the first conical drain seat. An arc pressure plate is provided on the inner side of each of the four retraction boxes. A first spring is fixedly connected to the bottom of the arc pressure plate. A protective plate that slides in the vertical sliding groove is fixedly connected to one side of the arc pressure plate. A rectangular rod is fixedly connected to the top of the arc pressure plate, and the top end of the rectangular rod passes through the conical ring seat and extends to the upper part of the conical ring seat. An upper pressure ring is fixedly connected between the top ends of several rectangular rods. A horizontal connecting rod is fixedly connected to one side of each of the four arc pressure plates. A rotating ring is fixedly connected between the four horizontal connecting rods.

[0012] Preferably, an annular sliding frame is slidably mounted on the surface of the rotating ring, a sealing rotating cylinder is fixedly connected to the inner side of the annular sliding frame, a lifting rod is fixedly connected to the bottom edge of the rotating frame, and several lifting rods are provided. The bottom end of the lifting rod passes through the annular sliding frame and extends to the bottom of the annular sliding frame. A circular plate is fixedly connected to the end of the lifting rod extending to the bottom of the annular sliding frame. An inclined scraper is fixedly connected to the surface of the circular plate through a bracket, and several inclined scrapers are provided. The inclined scraper is in contact with the top of the first conical leakage seat. A leakage port is opened on the surface of the sealing rotating cylinder, and several leakage ports are provided.

[0013] Preferably, a circular flat block is fixedly connected to the bottom of the sealing cylinder via a bracket, a reciprocating screw is fixedly connected to the bottom of the circular flat block, a lifting cylinder is threadedly connected to the surface of the reciprocating screw, a bellows is fixedly connected between the circular flat block and the lifting cylinder, and the bellows is sleeved on the surface of the reciprocating screw, positioning plates are fixedly connected to both sides of the inner cavity of the lifting cylinder, a button is fixedly connected to the bottom of the positioning plate, a pressure rod is slidably installed at the bottom of the lifting cylinder through an opening, a pressure filling plate is fixedly connected to the bottom end of the pressure rod, a stop plate is fixedly connected to the top end of the pressure rod, pressing columns are fixedly connected to both sides of the top of the stop plate, and a second spring is sleeved on the surface of the pressure rod between the lifting cylinder and the pressure filling plate.

[0014] Preferably, the inner wall of the equipment cylinder has a through-hole extending to the outside, and a sliding crossbar is fixedly connected to the surface of the sealing cylinder. One end of the sliding crossbar passes through the through-hole and extends to the outside of the equipment cylinder. An arc-shaped sealing plate that cooperates with the through-hole is fixedly connected to the end of the sliding crossbar extending to the outside of the equipment cylinder.

[0015] Preferably, a closed bracket is fixedly connected to the bottom of the device cylinder, a base plate is fixedly connected to the bottom of the closed bracket, a pull-out groove is provided on the top of the base plate, and several pull-out grooves are provided. A positioning hole is provided on the inner side of the pull-out groove. A correction column is fixedly connected to the inner side of the base plate through a bracket. A strip-shaped pull plate is slidably installed on the inner side of the pull-out groove. A threaded column is fixedly connected to the top of the strip-shaped pull plate. A snap-fit ​​threaded cylinder that mates with the positioning hole is threadedly connected to the surface of the threaded column. An arc-shaped inner groove is provided at one end of the strip-shaped pull plate near the correction column. A rectangular head is fixedly installed on the top of the strip-shaped pull plate. A square sleeve is fitted on the surface of the rectangular head. A sample storage cylinder is fixedly connected to the top of the square sleeve.

[0016] Preferably, a first threaded sleeve is fixedly connected to both sides of the equipment cylinder, and an alarm is fixedly installed on the surface of the equipment cylinder.

[0017] Preferably, the driving sealing mechanism includes a sealing cover, with a second threaded sleeve fixedly connected to both sides of the sealing cover for use with the first threaded sleeve. A threaded bolt is threadedly connected to the inner side of the second threaded sleeve. A motor is fixedly installed on the top of the threaded bolt through an opening. The output shaft of the motor is fixedly connected to a rotating vertical rod through a coupling. A leak-proof cover is fixedly connected to the bottom end of the rotating vertical rod. Arc-shaped inserts for use with arc-shaped slots are fixedly connected to both sides of the top of the leak-proof cover. A handle is fixedly connected to the top of the sealing cover.

[0018] This invention provides a field sampling tool for engineering cost surveying. Compared with existing technologies, it has the following advantages:

[0019] (1) The on-site sampling tool used for the cost survey of this project combines the screening and filling mechanism and the driving sealing mechanism. The two mechanisms can fill the inside of the filter screen cylinder with sand, and use the motor to drive the rotation of the rotating frame, the sealing cylinder and the lifting empty cylinder to separate the sand from the garbage, then remix it and press it into the inside of the sample storage cylinder, so that the sample volume inside several sample storage cylinders is close to the same, and subsequent testing can be carried out directly, thereby effectively improving the sand sampling efficiency and the overall quality of the sand to be tested after sampling.

[0020] (2) The on-site sampling tool used for the cost survey of this project uses a round flat block at the bottom of the sealed rotating cylinder to drive the lifting cylinder to rotate, thereby causing the pressure rod and the pressure plate to move up and down repeatedly. This allows the pressure plate to continuously press the mixed sand into the interior of the sample storage cylinder. Furthermore, the sliding setting of the pressure rod allows the sand to reach the sampling height inside the sample storage cylinder and then use the compaction of the sand to push the pressure plate in the opposite direction, thereby causing the pressure rod to push the pressing column to rise until the pressing column presses the button to activate the alarm. Once activated, the alarm will sound an alarm to remind the user, thus effectively ensuring that the sample size is close each time, improving the sampling quality and efficiency.

[0021] (3) The on-site sampling tool used for the cost survey of this project has a base plate installed on the bottom of the equipment cylinder using a closed bracket. Then, a pull groove is opened on the top of the base plate and a strip-shaped pull plate and a sample storage cylinder are installed. It is used in conjunction with the arc inner groove and the snap-fit ​​threaded cylinder. The structure can use the contact between the correction column and the arc inner groove to push several sample storage cylinders into the bottom of the second conical leak seat in sequence, which is convenient for filling. After the filling is completed, the sample storage cylinder can be fixed by the docking of the snap-fit ​​threaded cylinder with positioning holes, so that the samples of the same sand pile can be placed together, which is convenient for carrying and for subsequent material feeding and testing. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a cross-sectional view of the sieving packing mechanism and the driving sealing mechanism of the present invention;

[0024] Figure 3 For the present invention Figure 2 A magnified view of a section at point A in the middle;

[0025] Figure 4 For the present invention Figure 2 A magnified view of a section at point B in the middle;

[0026] Figure 5 This is a schematic diagram of the screening packing mechanism structure of the present invention;

[0027] Figure 6 This is a schematic diagram of the first spring, rectangular rod, and upper pressure ring structure of the present invention;

[0028] Figure 7 This is a schematic diagram of the protective plate, rectangular rod, and upper pressure ring structure of the present invention;

[0029] Figure 8 This is a schematic diagram of the rotating frame, polygonal inner ring, and arc-shaped slot structure of the present invention;

[0030] Figure 9This is a cross-sectional view of the filter cylinder and sealed rotating cylinder structure of the present invention;

[0031] Figure 10 For the present invention Figure 9 A magnified view of a section at point C;

[0032] Figure 11 For the present invention Figure 9 A magnified view of a section at point D;

[0033] Figure 12 This is a cross-sectional view of the cylindrical structure of the device of the present invention;

[0034] Figure 13 For the present invention Figure 12 A magnified view of a section at point E in the middle;

[0035] Figure 14 This is a schematic diagram of the threaded column, snap-fit ​​threaded cylinder, and arc-shaped inner groove structure of the present invention;

[0036] Figure 15 This is a schematic diagram of the base plate, pull-out groove, positioning hole, and straightening column structure of the present invention.

[0037] Figure 16 This is a schematic diagram of the structure of the driving sealing mechanism of the present invention.

[0038] In the diagram: 1. Screening packing mechanism; 2. Drive sealing mechanism; 101. Equipment cylinder; 102. Conical ring seat; 103. Annular rotating groove; 104. Annular slider; 105. Rotating frame; 106. Polygonal inner ring; 107. Arc-shaped slot; 108. Filter screen cylinder; 109. Polygonal outer ring; 110. First conical drain seat; 111. Second conical drain seat; 112. Retraction box; 113. Vertical sliding groove 114. Arc pressure plate; 115. First spring; 116. Protective plate; 117. Rectangular rod; 118. Upper pressure ring; 119. Horizontal connecting rod; 120. Rotating ring; 121. Annular sliding frame; 122. Sealing rotary cylinder; 123. Lifting round rod; 124. Circular ring plate; 125. Inclined scraper; 126. Material discharge port; 127. Circular flat block; 128. Reciprocating lead screw; 129. Lifting empty cylinder; 13 0. Corrugated pipe; 131. Positioning plate; 132. Button; 133. Pressure rod; 134. Stop plate; 135. Pressing post; 136. Pressing plate; 137. Second spring; 138. Strip opening; 139. Sliding crossbar; 140. Arc-shaped sealing plate; 141. Base plate; 142. Pull-out groove; 143. Positioning hole; 144. Correcting post; 145. Strip-shaped drawer plate; 146. Threaded post 147. Snap-fit ​​threaded cylinder; 148. Arc-shaped inner groove; 149. Rectangular head; 150. Square sleeve; 151. Sample storage cylinder; 152. Enclosed bracket; 153. First threaded sleeve; 154. Alarm; 201. Sealing cover; 202. Second threaded sleeve; 203. Threaded bolt; 204. Motor; 205. Rotating vertical rod; 206. Leakage prevention cover; 207. Arc insert block; 208. Handle bracket. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Please see Figures 1-16 The present invention provides a technical solution: a field sampling tool for engineering cost surveying, comprising a screening and filling mechanism 1 and a driving and sealing mechanism 2;

[0041] Please refer to Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14 and Figure 15The diagram illustrates the overall structure of the screening packing mechanism 1. The screening packing mechanism 1 includes a device cylinder 101. A conical ring seat 102 is fixedly connected to the top of the device cylinder 101. An annular groove 103 is formed inside the conical ring seat 102. An annular slider 104 is slidably mounted on the inner side of the annular groove 103. A rotating frame 105 is fixedly connected to the inner side of the annular slider 104. A polygonal inner ring 106 is fixedly connected to the inner side of the rotating frame 105. Arc-shaped slots 10 are formed on both sides of the top of the rotating frame 105. 7. A filter screen cylinder 108 is provided on the inner side of the rotating frame 105, and a multi-faceted outer ring 109 that cooperates with the multi-sided inner ring 106 is fixedly connected to the surface of the filter screen cylinder 108. The filter screen cylinder 108 is detachably connected by the snap-fit ​​between the multi-faceted outer ring 109 and the multi-sided inner ring 106, which facilitates subsequent cleaning and maintenance. The mesh size of the filter screen cylinder 108 is 2mm-5mm, which only allows sand particles to pass through and blocks large particles of impurities. The drive sealing mechanism 2 is located on the upper part of the equipment cylinder 101.

[0042] The upper and lower parts of the inner wall of the equipment cylinder 101 are respectively fixedly connected to a first conical drain seat 110 and a second conical drain seat 111. Retraction boxes 112 are fixedly connected to both sides, front, and rear of the inner cavity of the equipment cylinder 101. Vertical sliding grooves 113 are formed on the surface of the retraction boxes 112, and the retraction boxes 112 are located above the first conical drain seats 110. Arc pressure plates 114 are provided on the inner sides of all four retraction boxes 112. A first spring 115 is fixedly connected to the bottom of the arc pressure plate 114. A protective plate 116 that is slidably connected to the vertical slide groove 113 is fixedly connected to one side of the pressure plate 114. A rectangular rod 117 is fixedly connected to the top of the arc pressure plate 114, and the top end of the rectangular rod 117 passes through the conical ring seat 102 and extends to the upper part of the conical ring seat 102. An upper pressure ring 118 is fixedly connected between the top ends of several rectangular rods 117. A horizontal connecting rod 119 is fixedly connected to one side of each of the four arc pressure plates 114. A rotating ring 120 is fixedly connected between the four horizontal connecting rods 119.

[0043] A ring-shaped sliding frame 121 is slidably mounted on the surface of the rotating ring 120. A sealing rotating cylinder 122 is fixedly connected to the inner side of the ring-shaped sliding frame 121. The inner diameter of the sealing rotating cylinder 122 is adapted to the outer diameter of the filter screen cylinder 108. In the initial state, the sealing rotating cylinder 122 is sleeved on the outside of the filter screen cylinder 108 to achieve a seal. A lifting round rod 123 is fixedly connected to the bottom edge of the rotating frame 105. Several lifting round rods 123 are provided. The bottom end of the lifting round rod 123 passes through the ring-shaped sliding frame 121 and extends to the bottom of the ring-shaped sliding frame 121. A circular ring plate 124 is fixedly connected to the end of the lifting round rod 123 extending to the bottom of the ring-shaped sliding frame 121. An inclined scraper 125 is fixedly connected to the surface of the circular ring plate 124 through a bracket. Several inclined scrapers 125 are provided. The inclined scraper 125 is in contact with the top of the first conical leak seat 110. A leakage port 126 is opened on the surface of the sealing rotating cylinder 122. Several leakage ports 126 are provided.

[0044] A circular flat block 127 is fixedly connected to the bottom of the sealed rotating cylinder 122 via a bracket. A reciprocating screw 128 is fixedly connected to the bottom of the circular flat block 127. A lifting cylinder 129 is threadedly connected to the surface of the reciprocating screw 128. A bellows 130 is fixedly connected between the circular flat block 127 and the lifting cylinder 129. The bellows 130 is a telescopic dustproof bellows to prevent sand from entering the threaded connection. The bellows 130 is fitted onto the surface of the reciprocating screw 128. Positioning plates 131 are fixedly connected to both sides of the inner cavity of the lifting cylinder 129 for positioning. A button 132 is fixedly connected to the bottom of the plate 131. The button 132 is electrically connected to the alarm 154 and is used to trigger the alarm. A pressure rod 133 is slidably installed at the bottom of the lifting cylinder 129 through an opening. A pressure plate 136 is fixedly connected to the bottom end of the pressure rod 133. A stop plate 134 is fixedly connected to the top end of the pressure rod 133. Pressing posts 135 are fixedly connected to both sides of the top of the stop plate 134. A second spring 137 is sleeved on the surface of the pressure rod 133 and between the lifting cylinder 129 and the pressure plate 136.

[0045] The inner wall of the equipment cylinder 101 is provided with a strip-shaped opening 138 that extends to the outside. A sliding crossbar 139 is fixedly connected to the surface of the sealing rotating cylinder 122. One end of the sliding crossbar 139 passes through the strip-shaped opening 138 and extends to the outside of the equipment cylinder 101. An arc-shaped sealing plate 140 that cooperates with the strip-shaped opening 138 is fixedly connected to the end of the sliding crossbar 139 that extends to the outside of the equipment cylinder 101.

[0046] A closed bracket 152 is fixedly connected to the bottom of the equipment cylinder 101. A base plate 141 is fixedly connected to the bottom of the closed bracket 152. A pull-out groove 142 is provided on the top of the base plate 141, and several pull-out grooves 142 are provided. A positioning hole 143 is provided on the inner side of the pull-out groove 142. A straightening column 144 is fixedly connected to the inner side of the base plate 141 through a bracket. A strip-shaped draw plate 145 is slidably installed on the inner side of the pull-out groove 142. A threaded post 146 is fixedly connected to the top of the strip-shaped draw plate 145. A snap-fit ​​threaded cylinder 147 that mates with the positioning hole 143 is threadedly connected to the surface of the threaded post 146. An arc-shaped inner groove 148 is provided at one end of the strip plate 145 near the correction column 144. A rectangular head 149 is fixedly installed on the top of the strip plate 145. A square sleeve 150 is fitted on the surface of the rectangular head 149. A sample storage cylinder 151 is fixedly connected to the top of the square sleeve 150. The sample storage cylinder 151 is detachably connected by the snap-fit ​​between the square sleeve 150 and the rectangular head 149, which facilitates sample removal and container cleaning. First threaded sleeves 153 are fixedly connected to both sides of the equipment cylinder 101. An alarm 154 is fixedly installed on the surface of the equipment cylinder 101. The alarm 154 is model TGSG-190 and has dustproof and waterproof functions.

[0047] Please refer to Figure 16 The overall structure of the drive sealing mechanism 2 is shown. The drive sealing mechanism 2 includes a sealing cover 201. Both sides of the sealing cover 201 are fixedly connected to a second threaded sleeve 202 that cooperates with the first threaded sleeve 153. The inner side of the second threaded sleeve 202 is threadedly connected to a threaded bolt 203. The top of the threaded bolt 203 is fixedly installed with a motor 204 through an opening. The motor 204 is a variable speed DC motor equipped with a rechargeable battery pack for easy outdoor use. The output shaft of the motor 204 is fixedly connected to a rotating vertical rod 205 through a coupling. The bottom end of the rotating vertical rod 205 is fixedly connected to a leak-proof cover 206. Both sides of the top of the leak-proof cover 206 are fixedly connected to arc-shaped inserts 207 that cooperate with arc-shaped slots 107. The top of the sealing cover 201 is fixedly connected to a handle bracket 208.

[0048] In use, first lift the sealing cover 201 from the top of the equipment cylinder 101, then use a small shovel to scoop sand and pour it into the inside of the filter screen cylinder 108. Since the sealing rotating cylinder 122 is wrapped around the surface of the filter screen cylinder 108, the sand will not leak. After the filter screen cylinder 108 is full of sand, then unscrew the snap-fit ​​threaded cylinder 147 and pull it out from the inside of the positioning hole 143. Then push the corresponding strip-shaped pull plate 145 so that the arc-shaped inner groove 148 abuts against the correction column 144 and is limited. At this time, the sample storage cylinder 151 is located directly below and connected to the second conical leak seat 111. Then, use the handle bracket 208 to press the sealing cover 201 onto the top of the equipment cylinder 101. As the sealing cover 201 is pressed, it will first contact the upper pressure ring 118 and press the upper pressure ring 118 down. When the rectangular rod 117 presses the arc pressure plate 114 back into the retractable box 112, the arc pressure plate 114 will also drive the rotating ring 120, the annular sliding frame 121, and the sealing rotating cylinder 122 to descend under the limiting action of the lifting round rod 123, until the leakage port 126 is inserted into the inner side of the first conical leakage seat 110, and the sealing rotating cylinder 122 no longer covers the surface of the filter screen cylinder 108. At the same time, the sealing rotating cylinder 122 also uses the reciprocating screw 128 to push the pressure plate 136 to the top of the second conical leakage seat 111. At this time, the sealing cover cylinder 201 is completely connected to the top of the equipment cylinder 101. At this time, the anti-leakage cover 206 covers the top of the conical ring seat 102 and the arc insertion block 207 is inserted into the interior of the arc slot 107. Then, press the handle 208 with your hand and start the motor 204. At this time, the motor 204 drives the anti-leakage cover 206 and the arc-shaped insert block 207 to rotate by rotating the vertical rod 205. When the arc-shaped insert block 207 rotates to the end of the inner side of the arc-shaped slot 107, it will drive the rotating frame 105 to rotate under the action of the annular slider 104. At the same time, the multi-faceted outer ring 109, which is connected to the polygonal inner ring 106, will also drive the filter screen cylinder 108 to rotate. At this time, the rotation of the filter screen cylinder 108 will continuously throw out the sand inside, filtering out the branches and plastic waste inside the sand. After the sand is thrown out, it falls on the top of the first conical funnel seat 110. Then, the inclined scraper 125 continuously scrapes the sand to stir and mix it until the sand slides through the first conical funnel seat 110 and passes through the discharge port 126. The sand falls onto the top of the second conical funnel seat 111, and then accumulates inside the sample storage cylinder 151 through the guide of the second conical funnel seat 111. At the same time, the rotation of the sealing rotating cylinder 122 will also drive the circular flat block 127 and the reciprocating screw 128 to rotate. As the reciprocating screw 128 rotates, the lifting cylinder 129 will rise and fall back and forth within the limits of the sliding cross bar 139 and the arc-shaped sealing plate 140. Each time the lifting cylinder 129 rises and falls, it will drive the pressure rod 133 and the pressing plate 136 to rise and fall synchronously, so that the pressing plate 136 passes through the second conical funnel seat 111 and presses the sand into the sample storage cylinder 151. As more and more sand is pressed into the sample storage cylinder 151, the pressing plate 136 is resisted, causing the blocking side plate 134 and the pressing column 135 to continuously push upward.Once the sand is full, the pressing plate 136 is pressed back into the sample storage cylinder 151. The sand then obstructs the pressure, causing the pressing column 135 to rise and press the button 132. Pressing the button activates the alarm 154, which then sounds an alarm. At this point, the motor 204 is turned off, and the sealing cylinder 201 is lifted using the handle 208. The upper pressure ring 118 is no longer pressed, and the entire assembly, including the sealing cylinder 122, reciprocating screw 128, and lifting cylinder 129, rises and resets under the elastic force of the first spring 115, allowing the sealing cylinder 122 to wrap around the filter cylinder 108 again. The filter cylinder 108 is then manually removed from the conical ring seat 102, and the internal debris is emptied. The strip-shaped pull plate 145 is then pulled back to separate the sample storage cylinder 151 from the second conical leak seat 111. Finally, the threaded cylinder 147 is rotated and engaged with the fixed... The sample storage cylinder 151 is fixed by aligning with the positioning hole 143. Then, the other sample storage cylinders 151 are pushed to align with the second conical funnel seat 111. Sand is then scooped from the remaining positions and placed back into the filter cylinder 108 for further sampling. This process continues until all samples are collected. The second threaded sleeve 202 is then threaded and fixed to the first threaded sleeve 153 using the threaded bolt 203. The entire sieve filling mechanism 1 and drive sealing mechanism 2 are then carried by hand using the handle 208. When it is necessary to remove the sand from inside the sample storage cylinder 151, the threaded cylinder 147 is rotated and rises, disengaging from the positioning hole 143. Then, the strip-shaped pull plate 145 is pulled, causing the entire sample storage cylinder 151 to be pulled out from inside the pull groove 142. The sample storage cylinder 151 and the square sleeve 150 are then removed from the top of the rectangular head 149. Finally, the sand inside the sample storage cylinder 151 is poured out for testing.

[0049] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. A field sampling tool for engineering cost surveying, comprising a screening and filling mechanism (1) and a driving and sealing mechanism (2), characterized in that: The screening and filling mechanism (1) includes a device cylinder (101), a conical ring seat (102) is fixedly connected to the top of the device cylinder (101), an annular rotating groove (103) is opened inside the conical ring seat (102), an annular slider (104) is slidably installed on the inner side of the annular rotating groove (103), a rotating frame (105) is fixedly connected to the inner side of the annular slider (104), a polygonal inner ring (106) is fixedly connected to the inner side of the rotating frame (105), an arc-shaped slot (107) is opened on both sides of the top of the rotating frame (105), a filter screen cylinder (108) is provided on the inner side of the rotating frame (105), and a multi-faceted outer ring (109) that cooperates with the polygonal inner ring (106) is fixedly connected to the surface of the filter screen cylinder (108), and a driving sealing mechanism (2) is provided on the upper part of the device cylinder (101); The upper and lower parts of the inner wall of the equipment cylinder (101) are respectively fixedly connected to a first conical drain seat (110) and a second conical drain seat (111). Retraction boxes (112) are fixedly connected to both sides, the front, and the rear of the inner cavity of the equipment cylinder (101). Vertical sliding grooves (113) are provided on the surface of each retraction box (112), and the retraction box (112) is located above the first conical drain seat (110). Arc pressure plates (114) are provided on the inner sides of each of the four retraction boxes (112). A first spring (115) is fixedly connected to the bottom of each arc pressure plate (114). A protective plate (116) is fixedly connected to one side of the arc pressure plate (114) and slidably connected to the vertical slide groove (113). A rectangular rod (117) is fixedly connected to the top of the arc pressure plate (114), and the top end of the rectangular rod (117) passes through the conical ring seat (102) and extends to the upper part of the conical ring seat (102). An upper pressure ring (118) is fixedly connected between the top ends of several rectangular rods (117). A horizontal connecting rod (119) is fixedly connected to one side of each of the four arc pressure plates (114). A rotating ring (120) is fixedly connected between the four horizontal connecting rods (119). An annular sliding frame (121) is slidably mounted on the surface of the rotating ring (120). A sealing rotating cylinder (122) is fixedly connected to the inner side of the annular sliding frame (121). A lifting rod (123) is fixedly connected to the bottom edge of the rotating frame (105), and there are several lifting rods (123). The bottom end of the lifting rod (123) passes through the annular sliding frame (121) and extends to the bottom of the annular sliding frame (121). A circular plate (124) is fixedly connected to one end of the lifting rod (123) extending to the bottom of the annular sliding frame (121). An inclined scraper (125) is fixedly connected to the surface of the circular plate (124) through a bracket, and there are several inclined scrapers (125). The inclined scraper (125) is in contact with the top of the first conical leak seat (110). A leaking port (126) is opened on the surface of the sealing rotating cylinder (122), and there are several leaking ports (126). The bottom of the sealed rotary cylinder (122) is fixedly connected to a circular flat block (127) via a bracket. The bottom of the circular flat block (127) is fixedly connected to a reciprocating screw (128). A lifting cylinder (129) is threadedly connected to the surface of the reciprocating screw (128). A bellows (130) is fixedly connected between the circular flat block (127) and the lifting cylinder (129), and the bellows (130) is sleeved on the surface of the reciprocating screw (128). Positioning plates (131) are fixedly connected to both sides of the inner cavity of the lifting cylinder (129). A button (132) is fixedly connected to the bottom of the lifting cylinder (129). A pressure rod (133) is slidably installed at the bottom of the lifting cylinder (129) through an opening. A pressure plate (136) is fixedly connected to the bottom end of the pressure rod (133). A stop plate (134) is fixedly connected to the top end of the pressure rod (133). Pressing columns (135) are fixedly connected to both sides of the top of the stop plate (134). A second spring (137) is sleeved on the surface of the pressure rod (133) between the lifting cylinder (129) and the pressure plate (136). The inner wall of the equipment cylinder (101) is provided with a strip-shaped opening (138) that extends to the outside. A sliding crossbar (139) is fixedly connected to the surface of the sealing rotating cylinder (122). One end of the sliding crossbar (139) passes through the strip-shaped opening (138) and extends to the outside of the equipment cylinder (101). An arc-shaped sealing plate (140) that cooperates with the strip-shaped opening (138) is fixedly connected to the end of the sliding crossbar (139) that extends to the outside of the equipment cylinder (101).

2. The on-site sampling tool for engineering cost surveying according to claim 1, characterized in that: A closed bracket (152) is fixedly connected to the bottom of the equipment cylinder (101), and a base plate (141) is fixedly connected to the bottom of the closed bracket (152). A pull-out groove (142) is provided on the top of the base plate (141), and several pull-out grooves (142) are provided. A positioning hole (143) is provided on the inner side of the pull-out groove (142). A straightening column (144) is fixedly connected to the inner side of the base plate (141) through a bracket. A strip-shaped pull plate (145) is slidably installed on the inner side of the pull-out groove (142). A threaded post (146) is fixedly connected to the top of the pull plate (145). The surface of the threaded post (146) is threadedly connected to a snap-fit ​​threaded cylinder (147) that mates with the positioning hole (143). An arc-shaped inner groove (148) is opened at one end of the strip pull plate (145) near the correction post (144). A rectangular head (149) is fixedly installed on the top of the strip pull plate (145). A square sleeve (150) is fitted on the surface of the rectangular head (149). A sample storage cylinder (151) is fixedly connected to the top of the square sleeve (150).

3. The on-site sampling tool for engineering cost surveying according to claim 2, characterized in that: Both sides of the equipment cylinder (101) are fixedly connected with first threaded sleeves (153), and an alarm (154) is fixedly installed on the surface of the equipment cylinder (101).

4. The on-site sampling tool for engineering cost surveying according to claim 3, characterized in that: The driving sealing mechanism (2) includes a sealing cover (201). Both sides of the sealing cover (201) are fixedly connected to a second threaded sleeve (202) that cooperates with the first threaded sleeve (153). The inner side of the second threaded sleeve (202) is threadedly connected to a threaded bolt (203). The top of the threaded bolt (203) is fixedly installed with a motor (204) through an opening. The output shaft of the motor (204) is fixedly connected to a rotating vertical rod (205) through a coupling. The bottom end of the rotating vertical rod (205) is fixedly connected to a leak-proof cover (206). Both sides of the top of the leak-proof cover (206) are fixedly connected to an arc-shaped insert block (207) that cooperates with an arc-shaped slot (107). The top of the sealing cover (201) is fixedly connected to a handle bracket (208).

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