Uniaxial compression resistance point load detection device
The design of collecting fragment impurities of chip collection components, fixing single piles of clamping components and installing components is easy to disassemble and assemble the pressure plate, which solves the problem of inconvenient cleaning of fragment impurities in the single-axis compressive point load detection device, and improves the practicality of the device and the safety of detection.
Patent Information
- Application Number
- CN202422219677.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-11
AI Technical Summary
After the existing single-axis compressive point load detection device is broken, it is complicated to clean up the fragments and impurities inside the detection chamber, which increases the labor intensity of the staff.
A single-axis compression point load detection device is designed, including a chip collecting assembly for collecting fragments and impurities, a clamping assembly for fixing single piles, and a mounting assembly for convenient disassembly and assembly of pressure plates, and is detected by hydraulic cylinders and pressure sensor detectors.
It effectively avoids the accumulation of fragments and impurities in the detection box, reduces the difficulty of cleaning, improves the practicality of the device, and facilitates the maintenance and replacement of the pressure plate, ensuring the safety and accuracy of the inspection.
Smart Images

Figure CN223139177U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of single - pile compressive bearing capacity detection, and particularly relates to a uniaxial compressive point load detection device. Background Technique
[0002] A single pile refers to a vertical or inclined single - column foundation member set in soil, which can bear and transfer the load of the upper structure, and transfer all or part of the load of the building to the foundation soil. In order to test whether the quality of the single pile is appropriate, a special uniaxial compressive point load detection device is needed for detection.
[0003] After retrieval, the existing patent (publication number: CN212506447U) discloses a uniaxial compressive point load detection device, including a box body, a placement groove and a fixing ring. A detection chamber is opened inside the box body, and a high - definition camera is fixed at one end of the inner top of the detection chamber through bolts. A transparent protective cover is fixed outside the high - definition camera through a card slot. A placement groove is opened at the bottom of the detection chamber, and an exhaust fan is installed at the bottom of the placement groove through a mounting frame. A cylinder is installed on the inner top of the box body through a mounting frame, and a fixing ring is fixed to the output shaft on one side of the cylinder through a pin. The fixing ring is located inside the placement groove. An electric hydraulic cylinder is fixed to the top of the box body through bolts, and the output shaft at the bottom of the electric hydraulic cylinder is fixed to a pressing plate through bolts. The structure of the utility model is simple and easy to operate. At the same time, it can collect and clean the dust generated when the single pile breaks, and is suitable for being widely promoted and used.
[0004] However, in the above - mentioned scheme, when the single - pile compressive bearing capacity is too large and the single pile breaks, a large amount of broken blocks or dust impurities will accumulate inside the detection chamber. The existing cleaning of these broken - block impurities is rather cumbersome and inconvenient, which will increase the labor intensity of the staff for cleaning, resulting in inconvenience in use.
[0005] In view of this, the utility model proposes a uniaxial compressive point load detection device. Content of the Utility Model
[0006] The utility model proposes a uniaxial compressive point load detection device, which solves the problem that it is inconvenient to clean the impurities such as single - pile broken blocks inside the detection chamber in the related technology.
[0007] The technical solution of the utility model is as follows: A single-axis compressive point load detection device, including a detection box; a door body fixedly connected to the front of the detection box through a hinge; a controller fixedly connected to the upper end of one side of the detection box; a chip collection component assembled on the inner bottom wall of the detection box, and the chip collection component is used to collect chip impurities generated by the crushing of a single pile; a clamping component assembled at the lower ends of both sides of the detection box, and the clamping component is used to clamp and fix the lower end of the single pile; a pressure sensor detector movably connected to the upper end inside the detection box, and the bottom end of the pressure sensor detector is fixedly connected with a mounting plate; a pressure plate movably connected to the bottom end of the mounting plate; an installation component assembled on one side of the mounting plate, and the installation component is used to realize the installation and disassembly between the mounting plate and the pressure plate; a hydraulic cylinder fixedly connected to the top end of the detection box, and the output end of the hydraulic cylinder is fixedly connected with the top end of the pressure sensor detector.
[0008] The chip collection component includes: sliding grooves opened on both sides of the inner bottom wall of the detection box; a chip collection hopper movably connected to the inner bottom wall of the detection box; sliding plates fixedly connected to both sides of the bottom end of the chip collection hopper.
[0009] Preferably, a positioning component is arranged on the inner wall of the detection box on one side of the sliding groove, and the positioning component is used to realize the limit fixation after the sliding plate is slidably installed in the sliding groove. The positioning component includes: a fixing groove opened at the lower end of the inner wall of the detection box; a sliding rod fixedly connected to the inner wall of the fixing groove; a slider slidably connected to one side of the surface of the sliding rod; a fixing spring wound around the other side of the surface of the sliding rod, and both ends of the fixing spring are fixedly connected with the inner wall of the fixing groove and one side of the slider respectively; a pressing plate fixedly connected to the front of the slider.
[0010] Preferably, a dial block is opened on one side of the pressing plate, and the cross-sectional shape of the dial block is arc-shaped.
[0011] Preferably, a sliding structure is formed between the inside of the sliding plate and the sliding groove, and the cross-sectional shapes of the sliding plate and the sliding groove are convex.
[0012] Preferably, the top end inner wall of the chip collection hopper is beveled, and an integrated welded structure is formed between the bottom end of the chip collection hopper and the top end of the sliding plate.
[0013] Preferably, the installation component includes: a threaded groove opened at the middle position of the bottom end of the mounting plate; a fixing block fixedly connected to one side of the bottom end of the mounting plate; an adjusting bolt threadedly connected to one side of the fixing block, and one end of the adjusting bolt penetrates through the fixing block; a clamping block fixedly connected to one end of the adjusting bolt; a threaded block fixedly connected to the middle position of the top end of the pressure plate, and a threaded fit structure is formed between the threaded block and the inside of the threaded groove; an installation ring fixedly connected to the top end of the pressure plate in a ring shape.
[0014] Preferably, elastic ring pieces are annularly and fixedly connected to the inner top wall and the inner bottom wall of the mounting ring, and one side of the elastic ring piece is beveled.
[0015] Preferably, friction lines are equiangularly formed on one side of the adjusting bolt, and the cross-sectional shape of the friction lines is arc-shaped.
[0016] Preferably, the clamping assembly includes: clamping plates movably connected to the lower ends of both sides of the inner wall of the detection box; rubber pads fixedly connected to the inner walls of the clamping plates; pneumatic telescopic rods fixedly connected to the lower ends of both sides of the detection box, and the output ends of the pneumatic telescopic rods are fixedly connected to one side of the clamping plates.
[0017] Preferably, anti-slip lines are equiangularly formed on one side of the rubber pad, and the top view shape of the anti-slip lines is an isosceles trapezoid.
[0018] The beneficial effects of the present utility model are as follows:
[0019] 1. In the present utility model, through the set chip collecting assembly, when a single pile is broken due to excessive compressive bearing capacity, the enclosed space formed by the detection box and the door body can avoid the safety hazard caused by the flying of broken blocks too far, and the broken blocks and other impurities will fall into the chip collecting hopper. Then, after the subsequent detection operation is completed, the chip collecting hopper is slid out from the inside of the detection box, so as to facilitate the removal of the chip collecting hopper to centrally process the collected broken block impurities, avoid their direct accumulation on the inner bottom wall of the detection box, which causes the subsequent cleaning to be cumbersome and inconvenient, reduce the difficulty of the staff in cleaning the inner bottom wall of the detection box, and improve its practicability;
[0020] 2. In the present utility model, through the set installation assembly, by using the threaded fittings inside the threaded block and the threaded groove, the disassembly and assembly between the pressure plate and the mounting plate are realized. Then, the adjusting bolt is rotated so that the clamping block can be clamped into the mounting ring, and the elastic ring piece is used to increase the fastening property of the clamping block and the inner wall of the mounting ring. Therefore, the thread between the pressure plate and the mounting plate can be prevented from loosening, ensuring the long-term and firm installation of the pressure plate. Then, after the pressure plate is worn or damaged, it can be disassembled, which is convenient for its maintenance or replacement, and improves its practicability. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The present utility model will be further described in detail below with reference to the drawings and specific embodiments.
[0022] Figure 1 It is a schematic diagram of the overall structure of the present utility model after removing the door body;
[0023] Figure 2 It is a schematic diagram of the overall bottom view structure of the present utility model;
[0024] Figure 3 It is a schematic diagram of the overall partial sectional explosion structure of the present utility model;
[0025] Figure 4 Schematic enlarged structure diagram of the installation component of the present utility model;
[0026] Figure 5 Of the present utility model Figure 3 Schematic enlarged structure diagram of the position A in
[0027] In the figure: 1, hydraulic cylinder; 2, mounting plate; 3, pressure plate; 4, detection box; 5, clamping component; 501, clamping plate; 502, pneumatic telescopic rod; 503, anti-slip pattern; 504, rubber pad; 6, chip collection component; 601, chip collection hopper; 602, sliding plate; 603, fixed groove; 604, sliding groove; 605, slider; 606, shifting block; 607, pressing plate; 608, fixed spring; 609, sliding rod; 7, controller; 8, installation component; 801, installation ring; 802, threaded block; 803, elastic ring piece; 804, fixed block; 805, adjusting bolt; 806, friction pattern; 807, clamping block; 808, threaded groove; 9, pressure sensing detector; 10, door body. Specific implementation mode
[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present utility model.
[0029] Embodiment 1
[0030] The preferred embodiment of the uniaxial compressive point load detection device provided by the present utility model is as Figures 1 to 5 shown: A uniaxial compressive point load detection device includes a detection box 4; a door body 10 fixedly connected to the front of the detection box 4 through a hinge; a controller 7 fixedly connected to the upper end of one side of the detection box 4; a chip collection component 6 assembled on the inner bottom wall of the detection box 4, and the chip collection component 6 is used to collect the broken block impurities generated by the single pile crushing; a clamping component 5 assembled on the lower ends of both sides of the detection box 4, and the clamping component 5 is used to clamp and fix the lower end of the single pile; a pressure sensing detector 9 movably connected to the upper end inside the detection box 4, and the bottom end of the pressure sensing detector 9 is fixedly connected to a mounting plate 2; a pressure plate 3 movably connected to the bottom end of the mounting plate 2; an installation component 8 assembled on one side of the mounting plate 2, and the installation component 8 is used to realize the installation and disassembly between the mounting plate 2 and the pressure plate 3; a hydraulic cylinder 1 fixedly connected to the top of the detection box 4, and the output end of the hydraulic cylinder 1 is fixedly connected to the top of the pressure sensing detector 9.
[0031] The chip collecting assembly 6 includes: chute grooves 604 opened on both sides of the inner bottom wall of the detection box 4; a chip collecting hopper 601 movably connected to the inner bottom wall of the detection box 4; and sliding plates 602 fixedly connected to both sides of the bottom end of the chip collecting hopper 601.
[0032] It should be noted that there are still certain deficiencies in the existing uniaxial compressive point load detection device during actual use. When the uniaxial compressive bearing capacity is too large and the single pile is broken, a large amount of fragments or dust impurities will accumulate inside the detection chamber. The existing method for cleaning these fragments and impurities is rather cumbersome and inconvenient, which will increase the labor intensity of the staff during cleaning and lead to inconvenience in use.
[0033] In this embodiment, the single pile is placed on the inner bottom wall of the chip collecting hopper 601, and then the single pile is clamped and fixed by the clamping assembly 5. After that, the door body 10 is closed, and then the hydraulic cylinder 1 is started to lower the pressure sensing detector 9, the mounting plate 2, and the pressing plate 3. The pressing plate 3 presses the top end of the single pile, and the pressure sensor inside the pressure sensing detector 9 detects the pressure value in real time and displays it through the controller 7. When the pressure value reaches the preset compressive bearing capacity of the single pile, it means that the single pile is qualified; otherwise, it is unqualified. At the same time, when the single pile is broken due to excessive compressive bearing capacity, the enclosed space formed by the detection box 4 and the door body 10 can avoid the safety hazard caused by the fragments flying too far. And the broken fragments and other impurities will fall into the interior of the chip collecting hopper 601. Then, after the subsequent detection operation is completed, the door body 10 is opened, and the chip collecting hopper 601 is slid out from the inside of the detection box 4, which is convenient for taking out the chip collecting hopper 601 to centrally process and collect the broken fragments and impurities, avoiding the cumbersome and inconvenient subsequent cleaning caused by their direct accumulation on the inner bottom wall of the detection box 4. At the same time, when the pressing plate 3 is severely worn and needs maintenance or damaged and needs to be replaced, the pressing plate 3 can be disassembled from the bottom end of the mounting plate 2 through the mounting assembly 8 to achieve the quick disassembly, installation, and maintenance of the pressing plate 3.
[0034] In a further preferred embodiment of the present invention, a positioning assembly is provided on the inner wall of the detection box 4 on one side of the chute groove 604. The positioning assembly is used to realize the limit fixation after the sliding plate 602 is slidably installed in the chute groove 604. The positioning assembly includes: a fixing groove 603 opened at the lower end of the inner wall of the detection box 4; a sliding rod 609 fixedly connected to the inner wall of the fixing groove 603; a slider 605 slidably connected to one side of the surface of the sliding rod 609; a fixing spring 608 wound around the other side of the surface of the sliding rod 609, with both ends of the fixing spring 608 fixedly connected to the inner wall of the fixing groove 603 and one side of the slider 605 respectively; and a pressing plate 607 fixedly connected to the front surface of the slider 605.
[0035] In this embodiment, the toggle block 606 is toggled to drive the pressing plate 607 to slide, so that the slider 605 slides on the surface of the slide bar 609 to compress the fixing spring 608 until it is completely separated from the front of the chute 604. Then, the chip collecting hopper 601 is slid, so that the slide plate 602 slides out of the inside of the chute 604, thereby facilitating the removal of the chip collecting hopper 601 for centralized treatment of the collected chip impurities. At the same time, after the slide plate 602 slides into the inside of the chute 604, the elastic force of the fixing spring 608 can be utilized to make the pressing plate 607 slide back to its original position to limit the front of the chute 604, ensuring the limit fixation after the slide plate 602 slides inside the chute 604.
[0036] In a further preferred embodiment of the present invention, a toggle block 606 is provided on one side of the pressing plate 607, and the cross-sectional shape of the toggle block 606 is arc-shaped.
[0037] In this embodiment, the arc-shaped toggle block 606 is used to make it smoother for the staff to toggle the pressing plate 607 to slide.
[0038] In a further preferred embodiment of the present invention, a sliding structure is formed between the inside of the slide plate 602 and the chute 604, and the cross-sectional shapes of the slide plate 602 and the chute 604 are convex.
[0039] In this embodiment, the sliding of the convex slide plate 602 inside the chute 604 is used to improve the stability of the sliding installation of the chip collecting hopper 601 on the inner bottom wall of the detection box 4.
[0040] In a further preferred embodiment of the present invention, the top end of the inner wall of the chip collecting hopper 601 is a bevel, and an integrally welded structure is formed between the bottom end of the chip collecting hopper 601 and the top end of the slide plate 602.
[0041] In this embodiment, the beveled chip collecting hopper 601 is used to prevent chips from accumulating around the top end of the chip collecting hopper 601, facilitating the chips to fall into the inside of the chip collecting hopper 601 more conveniently.
[0042] Embodiment 2
[0043] On the basis of Embodiment 1, a preferred embodiment of the uniaxial compressive point load detection device provided by the present invention is as Figures 1 to 5 shown: The installation assembly 8 includes: a threaded groove 808 opened at the middle position of the bottom end of the installation plate 2; a fixed block 804 fixedly connected to one side of the bottom end of the installation plate 2; an adjusting bolt 805 threadedly connected to one side of the fixed block 804, and one end of the adjusting bolt 805 penetrates through the fixed block 804; a clamping block 807 fixedly connected to one end of the adjusting bolt 805; a threaded block 802 fixedly connected to the middle position of the top end of the pressure plate 3, and a threaded fit structure is formed between the threaded block 802 and the inside of the threaded groove 808; an installation ring 801 fixedly connected to the top end of the pressure plate 3 in a ring shape.
[0044] In this embodiment, by rotating the adjusting bolt 805, the clamping block 807 is moved to be completely separated from the mounting ring 801, and then the pressure plate 3 is rotated so that the threaded block 802 is completely disengaged from the inside of the threaded groove 808, facilitating the disassembly of the pressure plate 3. During installation, the threaded block 802 is used to cooperate with the threads inside the threaded groove 808 to achieve a firm installation of the pressure plate 3 at the bottom end of the mounting plate 2. Then, the adjusting bolt 805 is rotated so that the clamping block 807 is clamped towards the inner wall of the mounting ring 801, and the elastic ring piece 803 is used to increase the fastening property of the clamping block 807 and the inner wall of the mounting ring 801, thereby avoiding the loosening of the threads between the pressure plate 3 and the mounting plate 2 and ensuring the firm installation and fixation of the pressure plate 3.
[0045] In a further preferred embodiment of the present utility model, elastic ring pieces 803 are annularly and fixedly connected to the inner top wall and the inner bottom wall of the mounting ring 801, and one side of the elastic ring piece 803 is a bevel edge.
[0046] In this embodiment, the elastic ring piece 803 is used to increase the fastening property of the clamping block 807 and the inner wall of the mounting ring 801.
[0047] In a further preferred embodiment of the present utility model, friction lines 806 are equally angled on one side of the adjusting bolt 805, and the cross-sectional shape of the friction lines 806 is arc-shaped.
[0048] In this embodiment, the arc-shaped friction lines 806 are used to increase the anti-slip stability of the staff's fingers when rotating one side of the adjusting bolt 805.
[0049] In a further preferred embodiment of the present utility model, the clamping assembly 5 includes: clamping plates 501 movably connected to the lower ends of both sides of the inner wall of the detection box 4; rubber pads 504 fixedly connected to the inner walls of the clamping plates 501; pneumatic telescopic rods 502 fixedly connected to the lower ends of both sides of the detection box 4, and the output ends of the pneumatic telescopic rods 502 are fixedly connected to one side of the clamping plates 501.
[0050] In this embodiment, by starting the pneumatic telescopic rod 502, the clamping plate 501 slides, and then the lower end of the single pile surface can be flexibly clamped and fixed through the rubber pad 504, ensuring the vertical placement of the single pile, and further ensuring the accuracy of the subsequent detection of the vertical compressive bearing capacity of the single pile.
[0051] In a further preferred embodiment of the present utility model, anti-slip lines 503 are equally angled on one side of the rubber pad 504, and the shape of the anti-slip lines 503 in a top view is an isosceles trapezoid.
[0052] In this embodiment, the isosceles trapezoid anti-slip lines 503 are used to increase the contact friction between one side of the rubber pad 504 and the single pile surface, and improve the stability of clamping and fixing the single pile.
[0053] In summary, the clamping assembly 5 is used to clamp and fix the lower end of the single pile to ensure the stable vertical placement of the single pile. Moreover, the chip collecting hopper 601 can collect the broken pieces and impurities generated by the crushing of the single pile, avoiding the inconvenience of subsequent cleaning by the staff caused by accumulation on the inner bottom wall of the detection box 4. At the same time, the installation assembly 8 can realize the disassembly and assembly between the mounting plate 2 and the pressure plate 3, facilitating the disassembly of the pressure plate 3 after it is worn or damaged, and thus facilitating its maintenance or replacement.
[0054] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A uniaxial compressive point load detection device, characterized in that, Including: A detection box (4); A door body (10) fixedly connected to the front of the detection box (4) through a hinge; A controller (7) fixedly connected to the upper end of one side of the detection box (4); A chip collection component (6) assembled on the inner bottom wall of the detection box (4), and the chip collection component (6) is used to collect chip impurities generated by single pile crushing; A clamping component (5) assembled at the lower ends of both sides of the detection box (4), and the clamping component (5) is used to clamp and fix the lower end of the single pile; A pressure sensing detector (9) movably connected to the upper end inside the detection box (4), and a mounting plate (2) is fixedly connected to the bottom end of the pressure sensing detector (9); A pressure plate (3) movably connected to the bottom end of the mounting plate (2); A mounting component (8) assembled on one side of the mounting plate (2), and the mounting component (8) is used to realize the installation and disassembly between the mounting plate (2) and the pressure plate (3); A hydraulic cylinder (1) fixedly connected to the top end of the detection box (4), and the output end of the hydraulic cylinder (1) is fixedly connected to the top end of the pressure sensing detector (9); The chip collection component (6) includes: Chute grooves (604) opened on both sides of the inner bottom wall of the detection box (4); A chip collection hopper (601) movably connected to the inner bottom wall of the detection box (4); Sliding plates (602) fixedly connected to both sides of the bottom end of the chip collection hopper (601).
2. The uniaxial compressive point load detection device according to claim 1, characterized in that, A positioning component is arranged on the inner wall of the detection box (4) on one side of the chute groove (604), and the positioning component is used to realize the limit fixation after the sliding plate (602) is slidably installed in the chute groove (604). The positioning component includes: A fixing groove (603) opened at the lower end of the inner wall of the detection box (4); A sliding rod (609) fixedly connected to the inner wall of the fixing groove (603); A slider (605) slidably connected to one side of the surface of the sliding rod (609); A fixing spring (608) wound around the other side of the surface of the sliding rod (609), and both ends of the fixing spring (608) are respectively fixedly connected to the inner wall of the fixing groove (603) and one side of the slider (605); A pressing plate (607) fixedly connected to the front of the slider (605).
3. The uniaxial compressive point load testing device according to claim 2, characterized in that, A dial block (606) is opened on one side of the pressing plate (607), and the cross-sectional shape of the dial block (606) is arc-shaped.
4. A uniaxial compressive point load detection device according to claim 1, characterized in that, A sliding structure is formed between the inside of the sliding plate (602) and the chute groove (604), and the cross-sectional shapes of the sliding plate (602) and the chute groove (604) are convex.
5. The uniaxial compressive point load testing device according to claim 1, characterized in that, The top end inner wall of the chip collection hopper (601) is beveled, and an integrally welded structure is formed between the bottom end of the chip collection hopper (601) and the top end of the sliding plate (602).
6. The uniaxial compressive point load testing device according to claim 1, characterized in that, The mounting component (8) includes: A threaded groove (808) opened at the middle position of the bottom end of the mounting plate (2); A fixing block (804) fixedly connected to one side of the bottom end of the mounting plate (2); An adjusting bolt (805) threadedly connected to one side of the fixing block (804), and one end of the adjusting bolt (805) penetrates through the fixing block (804); A clamping block (807) fixedly connected to one end of the adjusting bolt (805); A threaded block (802) fixedly connected to the middle position at the top end of the pressure plate (3), and a threaded fit structure is formed between the threaded block (802) and the inside of the threaded groove (808); An installation ring (801) fixedly connected to the top end of the pressure plate (3) in a ring shape.
7. The uniaxial compressive point load detection device according to claim 6, characterized in that, Elastic ring pieces (803) are fixedly connected to the inner top wall and the inner bottom wall of the installation ring (801) in a ring shape, and one side of the elastic ring piece (803) is a bevel edge.
8. A uniaxial compressive point load detection device according to claim 6, characterized in that, Friction lines (806) are equally angled on one side of the adjusting bolt (805), and the cross-sectional shape of the friction lines (806) is arc-shaped.
9. The uniaxial compressive point load detection device according to claim 1, wherein The clamping assembly (5) includes: Clamping plates (501) movably connected to the lower ends of both sides of the inner wall of the detection box (4); Rubber pads (504) fixedly connected to the inner walls of the clamping plates (501); Pneumatic telescopic rods (502) fixedly connected to the lower ends of both sides of the detection box (4), and the output ends of the pneumatic telescopic rods (502) are fixedly connected to one side of the clamping plates (501).
10. A uniaxial compressive point load detection device according to claim 9, characterized in that, Anti-slip lines (503) are equally angled on one side of the rubber pad (504), and the shape of the anti-slip lines (503) in a top view is an isosceles trapezoid.
Citation Information
Patent Citations
Single-pile vertical compressive bearing capacity detection device
CN212506447U