Sample preparation device for geotechnical engineering detection

Abstract

The utility model discloses a sample preparation device for geotechnical engineering detection. The sample preparation device comprises an assembly body, a servo motor, a first double-tooth screw rod, a chain wheel, a chain, a second chain wheel, a second double-tooth screw rod, a lower movable plate, a supporting device, an upper movable plate and a compaction block. According to the utility model, the support device is arranged to realize quick demoulding of a soil sample, the motor drives the third double-tooth screw rod to rotate and drives the first support plate and the second support plate to move outwards at the same time, so that the extruded and formed soil sample is not supported, the upper movable plate and the lower movable plate are controlled to move again, and the soil sample is pushed to penetrate through the base plate and be demoulded from the bottom; according to the supporting device, the soil sample can be quickly and easily demoulded, the sample preparation convenience is improved, the soil sample is supported by utilizing the first supporting plate and the second supporting plate which are matched with each other, and rollers are arranged, so that the first supporting plate and the second supporting plate are driven by the sliding blocks to be separated from each other, and the soil sample can be conveniently prepared. And the movement is smoother and more stable.

Description

Technical Field

[0001] The utility model relates to the relevant fields of geotechnical engineering, in particular to a sample preparation device for geotechnical engineering detection. Background Art

[0002] Geotechnical engineering is the study of solving rock and soil engineering problems, including foundations, slopes and underground engineering. Both engineering practice and scientific research in this field require a large number of soil samples for experiments. The sampling devices currently used in geotechnical engineering are diverse and varied.

[0003] The Chinese patent with patent number CN202120605817.7 discloses "A sample preparation device for geotechnical engineering testing with convenient demolding". Through the bidirectional compaction of the first movable plate and the second movable plate, the compaction efficiency is improved, the compaction effect is more significant, and the compaction column and the limit frame are limited by the limit frame, which can prevent the displacement during the compaction and demolding of the soil sample, thereby achieving convenience and accuracy in demolding.

[0004] This structure has certain advantages, but still has some shortcomings:

[0005] When demolding, the device needs to turn the mold cylinder upside down and open the baffle through a latch to make the compaction column and the mold cylinder form a sliding connection to demold the soil sample in the mold cylinder. This process increases the operating steps of sample preparation and demolding and is relatively troublesome. Utility Model Content

[0006] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a sample preparation device for geotechnical engineering detection.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a sample preparation device for geotechnical engineering detection, including an assembly, a servo motor, a first double-threaded screw, a sprocket, a chain, a second sprocket, a second double-threaded screw, a lower movable plate, a supporting device, an upper movable plate, and a compacting block. A servo motor is installed at the top of the assembly, and the bottom end of the servo motor is connected to the first double-threaded screw by a coupling. The top outer side of the first double-threaded screw is connected to a sprocket, the outer side of the sprocket is meshed with the chain, the inner side of the right end of the chain is meshed with the second sprocket, the inner side of the second sprocket is connected to the second double-threaded screw, the bottom ends of the second double-threaded screw and the first double-threaded screw are respectively connected to the assembly, and the lower movable plate The upper and lower movable plates are threadedly connected with the first double-threaded screw and the second double-threaded screw, the compacting block is installed at the bottom end of the upper movable plate, the supporting device is embedded in the inner side of the lower movable plate, and is bolted to the lower movable plate with bolts, the supporting device includes a base plate, a positioning plate, a mold cylinder, an anti-sticking layer, a motor, a third double-threaded screw, and a movable support. A positioning plate is fixed to the right end of the base plate, the positioning plate is embedded in the inner side of the lower movable plate, and is bolted to the lower movable plate with bolts, the bottom end of the mold cylinder is fixed to the base plate, the motor is installed inside the base plate, and the right end thereof is transmission-connected to the third double-threaded screw by a coupling, the right end of the third double-threaded screw is movably connected to the base plate, and the inner side of the bottom end of the movable support is threadedly connected to the third double-threaded screw.

[0008] Preferably, the movable support member includes a first support plate, a slider, a slide seat, a support frame, a roller, and a second support plate, the bottom end of the first support plate is respectively fixed with a slider and a slide seat, the inner side of the slider is threadedly connected to the third double-thread screw, the bottom end of the slide seat is installed with a support frame, the middle part of the support frame is rollingly connected with a roller, and the roller rolls inside the base plate.

[0009] It is further preferred that a rectangular through hole is provided in the middle of the substrate, and an anti-sticking layer is sprayed inside the rectangular through hole to prevent the soil sample from sticking during demoulding.

[0010] It is further preferred that the slider, slide seat, support frame and roller are each provided with two groups, one group is provided at the bottom end of the first support plate, and the other group is provided at the bottom end of the second support plate, so as to facilitate the two-way movement of the first support plate and the second support plate, realize the opening and closing of the bottom end of the mold barrel, and facilitate the production and demolding of soil samples.

[0011] In a further embodiment, the right end of the second support plate fits with the left end of the first support plate to improve the stability of the support.

[0012] It is further preferred that both front and rear ends of the first support plate and the second support plate are provided with convex plates, which slide in the internal slide groove of the base plate. The horizontal sliding of the convex block in the slide groove makes the movement of the first support plate and the second support plate more stable, thereby facilitating the stable and precise support of the soil sample.

[0013] It is further preferred that the cross section of the mold cylinder is "convex" and a rectangular groove is provided in the middle thereof for making soil samples. This structure makes the connection between the mold cylinder and the base plate tighter.

[0014] It is further preferred that the anti-sticking layer is sprayed with PTFE coating, which has the advantage of not being easy to stick to objects, making the soil sample smoother and more complete when demoulding.

[0015] It is further preferred that both the first support plate and the second support plate are made of stainless steel, which has high strength, is not easily deformed, and has excellent supporting capacity.

[0016] It is further preferred that the surfaces of the first support plate, the second support plate and the interior of the mold cylinder are sprayed with PTFE coating to prevent the bottom of the soil sample from sticking to the first support plate, the second support plate and to prevent part of the soil sample from sticking to the inner wall of the mold cylinder.

[0017] Beneficial effects of the utility model:

[0018] The utility model realizes two-way extrusion of soil samples by setting a supporting device, and facilitates rapid demolding of the soil samples. The third double-threaded screw is driven to rotate by a motor to drive the first supporting plate and the second supporting plate to move outward at the same time, so that the extruded soil sample is not supported, and the movement of the upper movable plate and the lower movable plate is controlled again to push the soil sample through the base plate and demold from the bottom. The provision of an anti-sticking layer makes the demolding integrity stronger and avoids adhesion. The supporting device realizes rapid and easy demolding of the soil sample and improves the convenience of sample preparation.

[0019] The utility model provides a movable support member, uses the first support plate and the second support plate that are inclined and matched to support the soil sample, and provides a roller at the bottom end of the slide seat, so that the first support plate and the second support plate can move more smoothly and stably under the drive of the slide block. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of the support device of the utility model;

[0023] Figure 4 It is a schematic diagram of the cross-sectional structure of the support device of the utility model;

[0024] Figure 5 It is a schematic diagram of the cross-sectional structure of the support device of the utility model;

[0025] Figure 6 This is a schematic diagram of the three-dimensional structure of the movable support member of the utility model;

[0026] Figure 7 It is a detailed enlarged structural diagram of the movable support member of the utility model.

[0027] Among them: assembly-1, servo motor-2, first double-threaded screw-3, sprocket-4, chain-5, second sprocket-6, second double-threaded screw-7, lower movable plate-8, supporting device-9, upper movable plate-10, compacting block-11, base plate-91, positioning plate-92, mold cylinder-93, anti-sticking layer-94, motor-95, third double-threaded screw-96, movable support member-97, first support plate-971, slider-972, slide seat-973, support frame-974, roller-975, second support plate-976. DETAILED DESCRIPTION

[0028] In order to further explain the technical solution of the present utility model, it is described in detail through specific embodiments below.

[0029] See also Figure 1-2 The utility model provides a sample preparation device for geotechnical engineering detection, including an assembly 1, a servo motor 2, a first double-threaded screw 3, a sprocket 4, a chain 5, a second sprocket 6, a second double-threaded screw 7, a lower movable plate 8, an upper movable plate 10, and a compaction block 11. The servo motor 2 is installed at the top of the assembly 1, and the bottom end of the servo motor 2 is transmission-connected to the first double-threaded screw 3 by a coupling, the top outer side of the first double-threaded screw 3 is transmission-connected with a sprocket 4, the outer side of the sprocket 4 is meshed with the chain 5, the inner side of the right end of the chain 5 is meshed with the second sprocket 6, the inner side of the second sprocket 6 is transmission-connected with the second double-threaded screw 7, the bottom ends of the second double-threaded screw 7 and the first double-threaded screw 3 are respectively movably connected to the assembly 1, the lower movable plate 8 and the upper movable plate 10 are both threadedly connected to the first double-threaded screw 3 and the second double-threaded screw 7, and the compaction block 11 is installed at the bottom end of the upper movable plate 10.

[0030] See also Figure 3-5The utility model provides a sample preparation device for geotechnical engineering detection. The support device 9 is embedded in the inner side of the lower movable plate 8 and is bolted to the lower movable plate 8 by bolts. The support device 9 includes a base plate 91, a positioning plate 92, a mold cylinder 93, an anti-sticking layer 94, a motor 95, a third double-threaded screw rod 96, and a movable support member 97. The right end of the base plate 91 is fixed with a positioning plate 92, the positioning plate 92 is embedded in the inner side of the lower movable plate 8 and is bolted to the lower movable plate 8 by bolts. The bottom end of the mold cylinder 93 is fixed to the base plate 91, the motor 95 is installed inside the base plate 91, and the right end thereof is transmission-connected to the third double-threaded screw rod 96 by a coupling. The right end of the third double-threaded screw rod 96 is movably connected to the base plate 91, and the inner side of the bottom end of the movable support member 97 is threadedly connected to the third double-threaded screw rod 96.

[0031] In this embodiment, a rectangular through hole is provided in the middle of the substrate 91, and an anti-sticking layer 94 is sprayed inside the rectangular through hole to prevent the soil sample from sticking during demolding, so that the soil sample can pass through the rectangular through hole in the middle of the substrate 91 under the continuous downward push of the compacting block 11 after it is no longer supported by the first support plate 971 and the second support plate 976, so as to achieve demolding. The cross-section of the mold cylinder 93 is "convex", and a rectangular groove is provided in the middle thereof for making soil samples. This structure makes the connection between the mold cylinder 93 and the substrate 91 tighter. The anti-sticking layer 94 is sprayed with PTFE coating, which has the advantage of not being easy to stick to objects, making the soil sample smoother and more complete when demolded.

[0032] See also Figure 6-7 The utility model provides a sample preparation device for geotechnical engineering detection. The movable support member 97 includes a first support plate 971, a slider 972, a slide seat 973, a support frame 974, a roller 975, and a second support plate 976. The bottom end of the first support plate 971 is respectively fixed with a slider 972 and a slide seat 973. The inner side of the slider 972 is threadedly connected to the third double-thread screw 96. The bottom end of the slide seat 973 is installed with a support frame 974. The middle part of the support frame 974 is rollingly connected with a roller 975, and the roller 975 rolls on the inside of the base plate 91.

[0033] In this embodiment, two groups of sliders 972, slide seats 973, support frames 974, and rollers 975 are provided, one group is provided at the bottom end of the first support plate 971, and the other group is provided at the bottom end of the second support plate 976, so as to facilitate the two-way movement of the first support plate 971 and the second support plate 976, realize the opening and closing of the bottom end of the mold cylinder 93, and facilitate the production and demoulding of the soil sample. The right end of the second support plate 976 fits with the left end of the first support plate 971 to improve the stability of the support. The front and rear ends of the first support plate 971 and the second support plate 976 are provided with convex plates, which slide in the internal slide groove of the base plate 91. The horizontal sliding of the convex block in the slide groove makes the movement of the first support plate 971 and the second support plate 976 more stable, so as to facilitate the stable and accurate support of the soil sample. The first support plate 971 and the second support plate 976 are both made of stainless steel, which has high strength, is not easy to deform, and has excellent supporting capacity.

[0034] See also Figure 1-Figure 7 When in use, the material is placed inside the mold barrel 93, and the servo motor 2 is started. The servo motor 2 drives the first double-thread screw 3 and the sprocket 4 to rotate. Under the transmission effect of the chain 5, the second sprocket 6 and the second double-thread screw 7 rotate synchronously. Then, driven by the rotating first double-thread screw 3 and the second double-thread screw 7, the lower movable plate 8 and the upper movable plate 10 move inward at the same time, and the material is squeezed by the upward mold barrel 93 and the downward compacting block 11 to form a soil sample. When the extrusion is completed, the servo motor 2 stops;

[0035] At this time, the motor 95 starts, driving the third double-threaded screw 96 to rotate, and then driving the first support plate 971 and the second support plate 976 to move outward. During the movement, the roller 975 assists in the movement, so that the first support plate 971 and the second support plate 976 can move more smoothly under the drive of the single-sided slider 972. After the first support plate 971 and the second support plate 976 move outward, the soil sample is no longer supported, and then the servo motor 2 starts again, driving the lower movable plate 8 and the upper movable plate 10 to move inward again. Through the continuous downward movement of the compacting block 11, the formed soil sample moves downward, passes through the base plate 91, and is demolded from the bottom end of the base plate 91, completing the production and demolding of the soil sample.

[0036] The control method of the present invention is to control by manually starting and closing the switch. The wiring diagram of the power element and the provision of power supply are common knowledge in the field, and the present invention is mainly used to protect mechanical devices, so the present invention will not explain the control method and wiring arrangement in detail.

[0037] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0038] The above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, 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 sample preparation device for geotechnical engineering testing, comprising an assembly (1), a servo motor (2), a first double-threaded screw (3), a sprocket (4), a chain (5), a second sprocket (6), a second double-threaded screw (7), a lower movable plate (8), an upper movable plate (10), and a compacting block (11), wherein the servo motor (2) is installed at the top of the assembly (1), and the bottom of the servo motor (2) is connected to the first double-threaded screw (3) by a coupling; Features: The invention also comprises a supporting device (9), wherein the supporting device (9) is embedded in the inner side of the lower movable plate (8) and is bolted to the lower movable plate (8) by bolts. The supporting device (9) comprises a base plate (91), a positioning plate (92), a mold cylinder (93), an anti-sticking layer (94), a motor (95), a third double-threaded screw rod (96), and a movable supporting member (97). The right end of the base plate (91) is fixed with a positioning plate (92), the positioning plate (92) is embedded in the inner side of the lower movable plate (8) and is bolted to the lower movable plate (8) by bolts. The bottom end of the mold cylinder (93) is fixed to the base plate (91). The motor (95) is installed inside the base plate (91), and the right end thereof is transmission-connected to the third double-threaded screw rod (96) by a coupling. The right end of the third double-threaded screw rod (96) is movably connected to the base plate (91), and the inner side of the bottom end of the movable supporting member (97) is threadedly connected to the third double-threaded screw rod (96).

2. A sample preparation device for geotechnical engineering testing according to claim 1, characterized in that: The movable support member (97) includes a first support plate (971), a slider (972), a slide seat (973), a support frame (974), a roller (975), and a second support plate (976). The bottom end of the first support plate (971) is respectively fixed with a slider (972) and a slide seat (973). The inner side of the slider (972) is threadedly connected to the third double-threaded screw (96). The bottom end of the slide seat (973) is installed with a support frame (974). The middle part of the support frame (974) is rollingly connected with a roller (975). The roller (975) rolls inside the base plate (91).

3. A sample preparation device for geotechnical engineering testing according to claim 1, characterized in that: The top outer side of the first double-threaded screw rod (3) is transmission-connected with a sprocket (4), the outer side of the sprocket (4) is meshed with a chain (5), the right inner side of the chain (5) is meshed with a second sprocket (6), the inner side of the second sprocket (6) is transmission-connected with a second double-threaded screw rod (7), the bottom ends of the second double-threaded screw rod (7) and the first double-threaded screw rod (3) are respectively movably connected to the assembly (1), the lower movable plate (8) and the upper movable plate (10) are both threadedly connected to the first double-threaded screw rod (3) and the second double-threaded screw rod (7), and the compacting block (11) is installed at the bottom end of the upper movable plate (10).

4. A sample preparation device for geotechnical engineering testing according to claim 1, characterized in that: A rectangular through hole is provided in the middle of the substrate (91), and an anti-sticking layer (94) is sprayed inside the rectangular through hole.

5. A sample preparation device for geotechnical engineering testing according to claim 2, characterized in that: The slider (972), the slide seat (973), the support frame (974), and the roller (975) are each provided in two groups, one group being provided at the bottom end of the first support plate (971), and the other group being provided at the bottom end of the second support plate (976).

6. A sample preparation device for geotechnical engineering testing according to claim 2, characterized in that: The right end of the second support plate (976) fits with the left end of the first support plate (971).

7. A sample preparation device for geotechnical engineering testing according to claim 2, characterized in that: The front and rear ends of the first support plate (971) and the second support plate (976) are both provided with convex plates, and the convex plates slide in the internal sliding grooves of the base plate (91).

8. A sample preparation device for geotechnical engineering testing according to claim 1, characterized in that: The cross section of the mold cylinder (93) is convex, and a rectangular groove is arranged in the middle thereof.

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