Vernier type liquid-plastic limit tester with positioning structure

Abstract

The utility model relates to the technical field of water conservancy investigation and detection, in particular to a vernier type liquid-plastic limit tester with a positioning structure, which comprises a base, support frames are welded on the left side and the right side of the top of the base, a first hydraulic push rod vertically penetrates through the middle of the top of each support frame, and the driving end of each first hydraulic push rod is screwed on a fixed sliding block. An electric telescopic rod is in threaded connection with the outer wall of one side of the fixed sliding block, the driving end of the electric telescopic rod transversely penetrates through the interior of the positioning plate, a measuring cone rod is arranged in the middle of the bottom of the positioning plate, and the bottom end of the measuring cone rod perpendicularly penetrates through the middle of the top of the vernier clamping seat. According to the improved liquid-plastic limit tester, by starting the electric telescopic rod, the positioning operation of the measuring cone rod can be realized, the measuring cone rod is prevented from falling off, and the first lifting mechanism can flexibly adjust the descending height of the measuring cone rod according to actual conditions, so that the bottom end of the measuring cone rod can be always kept in contact with the top of a test sample.

Description

Technical Field

[0001] The utility model relates to the technical field of water conservancy exploration and detection, in particular to a vernier type liquid-plastic limit determinator with a positioning structure. Background Technique

[0002] Water conservancy exploration and monitoring refers to an activity of exploring and monitoring water resources, hydrogeology, topography, climate conditions, social economy, etc. during the construction process of water conservancy projects. Its purpose is to ensure that the design and construction of water conservancy projects conform to the local actual situation and environmental protection requirements, and ensure the safety and benefits of water conservancy projects. The content of water conservancy exploration and monitoring includes the following aspects: First, water resources exploration; Second, hydrogeological exploration; Third, topographic and geomorphic exploration; Fourth, climate condition exploration; Fifth, social economy exploration.

[0003] A liquid-plastic limit determinator is an instrument used to measure the liquid limit and plastic limit of soil, and is mainly used in geotechnical experiments in the fields of water conservancy, agriculture, transportation, construction, etc. The liquid-plastic limit determinator mainly consists of two upper and lower metal discs, a measuring rod, a scale and a bracket, etc. The liquid limit refers to the maximum content of free water in the soil, that is, when the soil water content reaches the liquid limit, the soil presents a liquid state. The plastic limit refers to the boundary at which the soil changes from a liquid state to a semi-solid state, that is, when the soil water content reaches the plastic limit, the soil presents a semi-solid state. The liquid-plastic limit determinator has the characteristics of high test accuracy and simple operation, and is widely used in the field of soil moisture and consolidation performance testing.

[0004] The inventor found the following problems in the process of realizing the present utility model in the prior art: 1. The existing liquid-plastic limit determinator lacks a positioning mechanism for the measuring cone rod, so it is easy to cause the measuring cone rod to fall off downward during the measurement process; 2. The existing liquid-plastic limit determinator often manually rotates to adjust the vertical position of the measuring cone rod to descend, which is greatly affected by human factors, so it may cause the bottom end of the measuring cone rod not to be flush with the top of the measured sample. Content of the Utility Model

[0005] The purpose of the present utility model is to provide a vernier type liquid-plastic limit measuring instrument with a positioning structure, so as to solve the problems raised in the above-mentioned background technology that the existing liquid-plastic limit measuring instrument lacks a positioning mechanism for the measuring cone rod, which may easily lead to the situation that the measuring cone rod may fall off downward during the measurement process, and the existing liquid-plastic limit measuring instrument often manually rotates to adjust the vertical position of the measuring cone rod to descend, which is greatly affected by human factors, and may lead to the problem that the bottom end of the measuring cone rod fails to be flush with the top of the measured sample. To achieve the above purpose, the present utility model provides the following technical solutions: A vernier type liquid-plastic limit measuring instrument with a positioning structure, including a base, on the top of the base, support frames are welded on the left and right sides, in the middle of the top of the support frames, a first hydraulic push rod vertically penetrates through, the driving end of the first hydraulic push rod is screwed to a fixed slider, on the outer wall of one side of the fixed slider, an electric telescopic rod is threadedly connected, the driving end of the electric telescopic rod horizontally penetrates through the inside of a positioning plate, in the middle of the bottom of the positioning plate, a measuring cone rod is provided, the bottom end of the measuring cone rod vertically penetrates through the middle of the top of a vernier card seat, on one side of the vernier card seat, a second hydraulic push rod is threadedly connected, in the middle of the top of the base, a placement groove is provided, and clamping mechanisms are threadedly connected on the left and right sides of the placement groove.

[0006] Further preferably, the electric telescopic rod and the positioning plate together constitute a positioning mechanism.

[0007] Further preferably, a scale value is provided on the outer wall of the measuring cone rod, a vernier scale value is provided on the outer wall of the vernier card seat near the scale value, and a clamping groove is provided at the bottom end of the vernier card seat and is clamped with the top end of the placement groove.

[0008] Further preferably, the first hydraulic push rod and the fixed slider together constitute a first lifting mechanism.

[0009] Further preferably, the vernier card seat and the second hydraulic push rod together constitute a second lifting mechanism.

[0010] Further preferably, the clamping mechanism is composed of a turning handle, a rotating screw rod and a clamping ring. Among them, the turning handle is welded to one end of the rotating screw rod, the clamping ring is provided at the other end of the rotating screw rod, and the outer wall of the rod body of the rotating screw rod is threadedly connected to the inner wall of the placement groove.

[0011] Compared with the prior art, the beneficial effects of the present utility model are:

[0012] In the present utility model, an external controller is used to start the electric telescopic rod, causing its driving end to start shortening horizontally and disengaging from the positioning plate. As a result, the entire measuring cone rod is released from its position limitation and, under the action of gravity, drops vertically downward and inserts into the interior of the sample. At this time, the specific value formed between the outer wall of the measuring cone rod and the vernier caliper seat is read to obtain the specific depth to which the measuring cone rod has descended, thus completing the measurement. Before the measurement is carried out again, the operator can start the electric telescopic rod again, causing its driving end to start extending horizontally and passing through the interior of the positioning plate until its driving end inserts into the interior of the fixed slider provided on the other side, achieving the positioning operation of the measuring cone rod and preventing it from falling before the measurement.

[0013] In the present utility model, the clamping mechanism can complete the clamping and fixing of the measuring cup, preventing it from shifting in position during the depth measurement. When the first hydraulic push rod is started, its driving end starts to extend downward and pushes the fixed slider screwed thereto to slide downward along the inner walls on both sides of the support frame. During this period, the positioning plate connected to the fixed slider by the electric telescopic rod and the measuring cone rod provided at the bottom of the positioning plate will all be moved downward together until the bottom end of the measuring cone rod drops to contact the top of the test sample, serving as the starting end of the zero scale line of the test sample. The first lifting mechanism can flexibly adjust the descending height of the measuring cone rod according to the actual height of different measuring cups, so that its bottom end can always remain in contact with the top of the test sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a front view structural schematic diagram of the present utility model;

[0015] Figure 2 is a front view sectional structural schematic diagram of the present utility model;

[0016] Figure 3 is a side view sectional structural schematic diagram of the present utility model;

[0017] Figure 4 is a structural schematic diagram of the measuring cone rod of the present utility model;

[0018] Figure 5 is a structural schematic diagram of the clamping mechanism of the present utility model.

[0019] In the figure: 1, base; 2, support frame; 3, first hydraulic push rod; 4, fixed slider; 5, electric telescopic rod; 6, positioning plate; 7, measuring cone rod; 8, vernier caliper seat; 801, card slot; 9, second hydraulic push rod; 10, placement groove; 11, clamping mechanism; 1101, turning hand; 1102, rotating screw; 1103, clamping ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1 to 5 , the present invention provides a technical solution: a vernier type liquid-plastic limit determinator with a positioning structure, including a base 1. Support frames 2 are welded to the left and right sides of the top of the base 1. A first hydraulic push rod 3 vertically penetrates through the middle of the top of the support frame 2. The driving end of the first hydraulic push rod 3 is screwed to a fixed slider 4. One side outer wall of the fixed slider 4 is threadedly connected with an electric telescopic rod 5. The driving end of the electric telescopic rod 5 horizontally penetrates through the inside of a positioning plate 6. In the middle of the bottom of the positioning plate 6, there is a measuring cone rod 7. The bottom end of the measuring cone rod 7 vertically penetrates through the middle of the top of a vernier card holder 8. A second hydraulic push rod 9 is threadedly connected to one side of the vernier card holder 8. In the middle of the top of the base 1, there is a placement groove 10. Clamping mechanisms 11 are threadedly connected to the left and right sides of the placement groove 10.

[0022] In this embodiment, as Figure 2 and Figure 4 shown, the electric telescopic rod 5 and the positioning plate 6 together constitute a positioning mechanism; it should be noted that after the operator places the measuring cup containing the sample inside the placement groove 10 and clamps and fixes it through the clamping mechanism 11, then the operator can start the lifting mechanism to drive the vernier card holder 8 to engage with the top of the placement groove 10. At this time, the operator can first move the entire measuring cone rod 7 downward through the first lifting mechanism until the bottom end of the measuring cone rod 7 contacts the top of the tested sample. Then, the operator can start the electric telescopic rod 5 through an external controller, so that its driving end starts to shorten horizontally and disengages from the positioning plate 6, so that the entire measuring cone rod 7 is released from the position limitation, and under the action of gravity, it vertically drops downward and inserts into the sample. At this time, read the specific value formed between the outer wall of the measuring cone rod 7 and the vernier card holder 8 to know the specific depth that the measuring cone rod 7 has dropped to complete the measurement. Before the measurement, the operator can start the electric telescopic rod 5 again, so that its driving end starts to extend horizontally and passes through the inside of the positioning plate 6 until its driving end inserts into the fixed slider 4 provided on the other side to realize the positioning operation of the measuring cone rod 7 and prevent it from falling before the measurement.

[0023] In this embodiment, as Figure 1 and Figure 4As shown, the outer wall of the measuring cone rod 7 is provided with scale values, and the outer wall of the vernier card seat 8 is provided with vernier scale values on one side close to the scale values. The bottom end of the vernier card seat 8 is provided with a clamping groove 801 that engages with the top end of the placement groove 10. It should be noted that the operator can first start the second lifting mechanism to drive the entire vernier card seat 8 to move downward until the clamping groove 801 provided at its bottom end engages with the top end of the placement groove 10. Then, the operator can push the entire measuring cone rod 7 downward through the first lifting mechanism until its bottom end contacts the top of the test sample. After starting the electric telescopic rod 5 and detaching it from the inside of the positioning plate 6, at this time, the measuring cone rod 7 will fall vertically downward under the action of gravity. During this period, the measuring cone rod 7 will slide downward along the inner wall of the vernier card seat 8 until its bottom end is inserted into the test sample, and then it can be stopped. At the same time, the operator can correspondingly read the scale value on the outer wall of the measuring cone rod 7 that is flush with the top of the test sample, and according to the graduation on the measuring cone rod 7, find the vernier scale value where the scale line on the vernier card seat 8 aligns with the measuring cone rod 7. By adding the scale value shown on the measuring cone rod 7 and the vernier scale value corresponding to the scale line on the vernier card seat 8, the final falling depth can be obtained.

[0024] In this embodiment, as Figure 3 and Figure 4 shown, the first hydraulic push rod 3 and the fixed slider 4 together constitute the first lifting mechanism. It should be noted that when the operator places the measuring cup containing the sample inside the placement groove 10 and clamps and fixes it through the clamping mechanism 11, at this time, the operator can start the first hydraulic push rod 3 to make its driving end start to extend downward and push the fixed slider 4 screwed thereto to slide downward along the inner walls on both sides of the support frame 2. During this period, the positioning plate 6 connected to the fixed slider 4 through the electric telescopic rod 5 and the measuring cone rod 7 provided at the bottom of the positioning plate 6 will all be driven to move downward together until the bottom end of the measuring cone rod 7 drops to contact the top of the test sample. As the starting end of the zero scale line of the test sample, the first lifting mechanism can flexibly adjust the descending height of the measuring cone rod 7 according to the actual height of different measuring cups, so that its bottom end can always maintain contact with the top of the test sample.

[0025] In this embodiment, as Figure 1 and Figure 2As shown, the cursor clamping seat 8 and the second hydraulic push rod 9 together constitute the second lifting mechanism. It should be noted that when the operator places the measuring cup containing the sample inside the placement groove 10 and clamps and fixes it through the clamping mechanism 11, the operator can then start the second hydraulic push rod 9 at this time, causing its driving end to start shortening the rod body downward and driving the connected cursor clamping seat 8 to also move downward along the outer wall of the measuring cone rod 7 until the clamping groove 801 provided at the bottom end of the cursor clamping seat 8 can contact the top end of the placement groove 10 and engage with it, and then stop. The entire cursor clamping seat 8 is erected on the top end of the placement groove 10, providing a fixed support for the measuring cone rod 7, enabling it to stably slide downward along the inner wall of the cursor clamping seat 8 without shifting its position during the falling process, thus affecting the final measurement result.

[0026] In this embodiment, as Figure 3 and Figure 5 shown, the clamping mechanism 11 is composed of a turning handle 1101, a rotating screw 1102, and a clamping ring 1103. Among them, the turning handle 1101 is welded to one end of the rotating screw 1102, the clamping ring 1103 is provided at the other end of the rotating screw 1102, and the outer wall of the rod body of the rotating screw 1102 is screwed to the inner wall of the placement groove 10. It should be noted that after placing the measuring cup containing the sample inside the placement groove 10, the turning handles 1101 provided on the left and right sides of the placement groove 10 can be manually rotated simultaneously at this time, and the rotating screw 1102 welded to it is driven by the turning handle 1101 to rotate together, so that the rod body of the rotating screw 1102 can move along the screw holes opened on the inner walls of the left and right sides of the placement groove 10 and move inward, and push the inserted clamping ring 1103 to approach the measuring cup placed in the middle at the same time until the inner wall of the clamping ring 1103 can closely fit the outer wall of the measuring cup, thus completing the clamping and fixing of the measuring cup and preventing its position from shifting during the depth measurement, thereby affecting the final measurement result.

[0027] The usage method and advantages of the present utility model: When using this cursor-type liquid-plastic limit measuring instrument with a positioning structure, the working process is as follows:

[0028] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5As shown in the figure, first place the measuring cup containing the sample inside the placement groove 10. Then, manually rotate the turning handle 1101 at the same time, which drives the rotating screw rod 1102 welded to it to rotate together. As a result, the rod body of the rotating screw rod 1102 can move along the screw hole opened on the inner wall of the placement groove 10 and move into it, and push the clamping ring 1103 inserted into it towards the measuring cup placed in the middle until the inner wall of the clamping ring 1103 can closely fit with the outer wall of the measuring cup, completing the clamping and fixing of the measuring cup. Then, start the second hydraulic push rod 9 to drive the cursor clamping seat 8 to move downward until the clamping groove 801 provided at its bottom end can be engaged with the top end of the placement groove 10, and then stop. At this time, start the first hydraulic push rod 3 to push the fixed slider 4 to slide downward along the inner walls on the left and right sides of the support frame 2. During this period, the positioning plate 6 connected to the fixed slider 4 through the electric telescopic rod 5 and the measuring cone rod 7 provided at the bottom of the positioning plate 6 will all be driven to move downward together until the bottom end of the measuring cone rod 7 drops to contact the top of the sample to be tested. After completing the above steps, the operator can start the electric telescopic rod 5 through the external controller, so that its driving end disengages from the positioning plate 6, thereby releasing the position limitation of the entire measuring cone rod 7. Under the action of gravity, the measuring cone rod 7 will fall vertically downward and insert into the sample. At this time, add the scale value displayed on the measuring cone rod 7 to the cursor scale value corresponding to the scale line on the cursor clamping seat 8, and the final falling depth can be obtained to complete the measurement.

[0029] The above shows and describes the basic principles, main features and advantages of the present invention. Technical staff in this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and do not limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A vernier-type liquid-plastic limit measuring instrument with a positioning structure, comprising a base (1), characterized in that: A support frame (2) is welded to the left and right sides of the top of the base (1); a first hydraulic push rod (3) is vertically penetrated in the middle of the top of the support frame (2); a driving end of the first hydraulic push rod (3) is screwed to a fixed slider (4); an outer wall of one side of the fixed slider (4) is threadedly connected to an electric telescopic rod (5); the driving end of the electric telescopic rod (5) is horizontally penetrated into the interior of a positioning plate (6); a measuring cone rod (7) is provided in the middle of the bottom of the positioning plate (6); the bottom end of the measuring cone rod (7) is vertically penetrated in the middle of the top of a vernier chuck (8); a second hydraulic push rod (9) is threadedly connected to one side of the vernier chuck (8); a placement groove (10) is provided in the middle of the top of the base (1); a clamping mechanism (11) is threadedly connected to the left and right sides of the placement groove (10).

2. The vernier type liquid-plastic limit measuring instrument with a positioning structure according to claim 1, characterized in that: The electric telescopic rod (5) and the positioning plate (6) together form a positioning mechanism.

3. The vernier type liquid-plastic limit measuring instrument with a positioning structure according to claim 1, characterized in that: The outer wall of the measuring cone rod (7) is provided with scale values, and the outer wall of the vernier chuck (8) is provided with vernier scale values ​​on one side close to the scale values. The bottom end of the vernier chuck (8) is provided with a slot (801) that engages with the top end of the placement slot (10).

4. The vernier type liquid-plastic limit measuring instrument with a positioning structure according to claim 1, characterized in that: The first hydraulic push rod (3) and the fixed slide block (4) together form a first lifting mechanism.

5. The vernier type liquid-plastic limit measuring instrument with a positioning structure according to claim 1, characterized in that: The cursor holder (8) and the second hydraulic push rod (9) together form a second lifting mechanism.

6. The vernier type liquid-plastic limit measuring instrument with a positioning structure according to claim 1, characterized in that: The clamping mechanism (11) is composed of a handle (1101), a rotating screw (1102) and a clamping ring (1103), wherein the handle (1101) is welded to one end of the rotating screw (1102), the clamping ring (1103) is arranged at the other end of the rotating screw (1102), and the outer wall of the rotating screw (1102) is screwed to the inner wall of the placement groove (10).

Images