Soil shear resistance detection device

Abstract

The utility model provides a soil shear resistance detection device, and relates to the technical field of soil detection. The bottom end face of the workbench body is fixedly connected with four supporting columns in a rectangular array shape. A dial indicator is arranged on the left of the top end face of the workbench body. A feeding box is fixedly connected to the center of the right portion of the top end face of the workbench body. The feeding box is aligned with the position of the dial indicator; a lower shearing box is arranged at the right part of the top end surface of the workbench main body; the position of the lower shearing box is aligned with the position of the feeding box; the upper shear box is arranged in the middle of the upper part of the lower shear box. A locking insertion rod is inserted into an upper shear box and a lower shear box, at the moment, a locking clamping block can be inserted into a locking clamping groove to lock the upper shear box and the lower shear box, a separation wedge rod is pressed downwards, the locking clamping block can be extruded out of the locking clamping groove, and fixation between the upper shear box and the lower shear box is relieved; the problems that a worker needs to frequently screw a fixing bolt in the detection process, and operation is tedious are solved.

Description

Technical Field

[0001] This utility model relates to the field of soil testing technology, and in particular to a soil shear strength testing device. Background Art

[0002] In geotechnical testing, in order to assess the stability of soil, it is usually necessary to test the soil's resistance to shear force to determine the soil's stability. To facilitate the inspection of soil shear performance, soil shear performance testing devices are usually used. Existing soil shear performance testing devices typically consist of a placement platform, shear box, dial indicator, feed mechanism, and weight application seat.

[0003] For example, utility model application CN202123159189.3 discloses a direct shear apparatus, specifically including a placement platform, a shear box, a measuring mechanism, a power mechanism, and a force application mechanism. The shear box includes an upper shear box and a lower shear box, with the lower shear box slidably mounted on the placement platform. The upper shear box is located above the lower shear box and slidably connected to it. A pressure cap is fitted over the upper shear box. The measuring mechanism includes a dial indicator that abuts against the upper shear box. The power mechanism includes a drive rod connected to the lower shear box. The force application mechanism includes a vertical rod with a force application component at its lower end. The upper ends of both vertical rods are fitted with the same horizontal plate, which can slide on the vertical rod and is fixed in position. A pressure plate is rotatably mounted in the middle of the horizontal plate, and a pressure head is threaded onto the pressure plate. This utility model has a simple and ingenious structure. By improving the force application mechanism, the vertical load can always act perpendicularly on the shear surface, thereby improving the test measurement results.

[0004] However, in current traditional soil shear resistance testing devices, the upper and lower shear boxes are usually fixed together by bolts. When placing soil samples, the upper and lower shear boxes need to be fixed together. However, during the testing process, the staff needs to remove the bolts to release the fixation between the upper and lower shear boxes. This requires the staff to frequently tighten and loosen the bolts during the testing process, which is cumbersome and inconvenient. Utility Model Content

[0005] In view of this, the present invention provides a soil shear resistance testing device, which has a locking rod that allows workers to quickly and easily fix and separate the upper and lower shear boxes. When a soil sample is placed into the lower and upper shear boxes, the locking rod is inserted into them. As the locking rod is inserted, it compresses the locking block, causing the locking block to slide within the lower shear box and compress the fixing spring. When the locking rod is fully inserted, the locking block and the locking slot are perfectly aligned, at which point the locking... The locking block will reset as the fixing spring returns, inserting into the locking slot to lock the upper and lower shear boxes. After the upper and lower shear boxes are pressed against the dial indicator, the operator only needs to press down the separating wedge rod, causing it to squeeze the locking block and the connecting spring. As the separating wedge rod squeezes the locking block, it will slide within the lower shear box, disengaging it from the locking slot. Only then can the operator remove the locking rod to release the fixation between the upper and lower shear boxes.

[0006] This utility model provides a soil shear resistance testing device, specifically comprising: a workbench body; four support columns fixedly connected in a rectangular array on the bottom end face of the workbench body; a dial indicator installed on the left side of the top end face of the workbench body; a feed box fixedly connected in the center of the right side of the top end face of the workbench body; the feed box and the dial indicator are aligned; a lower shear box installed on the right side of the top end face of the workbench body; the lower shear box and the feed box are aligned; an upper shear box installed in the center above the lower shear box; a weight application seat installed on the bottom end face of the workbench body; and two connecting vertical rods installed on the top end face of the weight application seat.

[0007] Optionally, a feed screw is rotatably connected to the upper part of the feed box; a feed push rod is threadedly connected to the left side of the feed screw; the feed push rod is slidably connected inside the feed box; a control worm gear is fixedly connected to the outside of the feed screw; a control worm is rotatably connected to the lower part of the feed box; the control worm meshes with the control worm gear; and an operating handle is coaxially fixedly connected to the right side of the control worm.

[0008] Optionally, two locking rods are symmetrically inserted into the upper shear box; each of the two locking rods has a locking slot on its exterior; two locking blocks are symmetrically slidably connected in the lower shear box; the two locking blocks are aligned with the positions of the two locking slots respectively; a fixing spring is fixedly connected to the exterior of each of the two locking blocks; the ends of the two fixing springs are fixedly connected to the lower shear box.

[0009] Optionally, each of the two locking rods is slidably connected to a separating wedge; the two separating wedges are respectively aligned with the positions of the two locking blocks; a connecting spring is fixedly connected to the upper part of each of the two separating wedges; the ends of the two connecting springs are respectively fixedly connected to the top surfaces of the two locking rods.

[0010] Optionally, an mounting plate is provided on the upper part of the two connecting vertical rods; two auxiliary pull rods are symmetrically slidably connected inside the mounting plate; a fixed plug is fixedly connected to the end of each of the two auxiliary pull rods; an auxiliary spring is fixedly connected to the outer side of each of the two fixed plugs; and the two fixed plugs are respectively inserted into the two connecting vertical rods.

[0011] Optionally, a control screw is centrally threaded into the mounting plate; a pressure plate is fixedly connected to the bottom end face of the control screw; and multiple sets of ball bearings are fixedly connected to the bottom end face of the pressure plate in a ring array.

[0012] Beneficial effects

[0013] This invention allows for quick and easy fixation of soil shear boxes when soil samples are placed inside the lower and upper shear boxes. A locking rod is inserted into both boxes, pressing against a locking block. This causes the locking rod to slide within the lower shear box and compress the fixing spring. Once the locking rod is fully inserted, the locking block aligns perfectly with the locking slot. The locking block then returns to its original position with the spring's rebound, locking the upper and lower shear boxes in place. This simplifies the process, allowing for quick and easy fixation of the lower and upper shear boxes and significantly improves the convenience of the soil shear resistance testing device.

[0014] After the upper and lower shear boxes are firmly pressed against the dial indicator, the operator only needs to press down the separation wedge rod to squeeze the locking block, causing the locking block to slide inside the lower shear box and disengage from the locking slot. At this point, the operator can pull out the locking rod to release the fixation between the upper and lower shear boxes, facilitating the rapid separation of the upper and lower shear boxes for shear resistance testing and further improving the convenience of the soil shear resistance testing device. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0016] In the attached diagram:

[0017] Figure 1 This is a schematic diagram of the isometric structure of this utility model.

[0018] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0019] Figure 3 This is a cross-sectional structural schematic diagram of the feed box of this utility model.

[0020] Figure 4 This is a utility model Figure 3A magnified structural diagram at point A.

[0021] Figure 5 This is a cross-sectional view of the mounting plate of this utility model.

[0022] Figure 6 This is a utility model Figure 5 A magnified structural diagram at point B.

[0023] Figure 7 This is a cross-sectional view of the shear box of this utility model.

[0024] Figure 8 This is a cross-sectional structural diagram of the locking rod of this utility model.

[0025] List of reference numerals

[0026] 1. Main body of the worktable; 101. Support column; 102. Dial indicator; 103. Weight force application seat; 104. Lower shear box; 105. Upper shear box; 106. Locking rod; 107. Locking slot; 108. Separating wedge; 109. Connecting spring; 110. Fixing spring; 111. Locking block; 112. Connecting vertical rod; 113. Mounting plate; 114. Control screw; 115. Pressure plate; 116. Ball bearing; 117. Auxiliary pull rod; 118. Auxiliary spring; 119. Fixing rod; 120. Feed box; 121. Feed screw; 122. Feed push rod; 123. Control worm gear; 124. Control worm; 125. Operating handle. DETAILED DESCRIPTION

[0027] To make the objectives, solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Unless otherwise stated, the terms used herein have their ordinary meanings in the art. The same reference numerals in the drawings represent the same parts.

[0028] Example 1:

[0029] This utility model proposes a soil shear resistance testing device. Please refer to [reference needed]. Figures 1 to 8 Includes: main body of the workbench 1;

[0030] The bottom surface of the workbench body 1 is fixedly connected to four support columns 101 in a rectangular array; a dial indicator 102 is provided on the left side of the top surface of the workbench body 1; a feed box 120 is fixedly connected to the center of the right side of the top surface of the workbench body 1; the feed box 120 is aligned with the dial indicator 102; a lower shear box 104 is provided on the right side of the top surface of the workbench body 1; the lower shear box 104 is aligned with the feed box 120; an upper shear box 105 is provided in the center of the upper part of the lower shear box 104; a weight application seat 103 is provided on the bottom surface of the workbench body 1; two connecting vertical rods 112 are provided on the top surface of the weight application seat 103.

[0031] A feed screw 121 is rotatably connected to the upper part of the feed box 120; a feed push rod 122 is threadedly connected to the left side of the feed screw 121; the feed push rod 122 is slidably connected inside the feed box 120; a control worm gear 123 is fixedly connected to the outside of the feed screw 121; a control worm 124 is rotatably connected to the lower part of the feed box 120; the control worm 124 meshes with the control worm gear 123; an operating handle 125 is coaxially fixedly connected to the right side of the control worm 124.

[0032] Two locking rods 106 are symmetrically inserted into the upper shear box 105; each of the two locking rods 106 has a locking slot 107 on its exterior; two locking blocks 111 are symmetrically slidably connected inside the lower shear box 104; the two locking blocks 111 are aligned with the positions of the two locking slots 107 respectively; a fixing spring 110 is fixedly connected to the exterior of each of the two locking blocks 111; the ends of the two fixing springs 110 are fixedly connected inside the lower shear box 104.

[0033] Each of the two locking rods 106 has a slidably connected release wedge 108; the two release wedges 108 are respectively aligned with the positions of the two locking blocks 111; a connecting spring 109 is fixedly connected to the upper part of each of the two release wedges 108; the ends of the two connecting springs 109 are respectively fixedly connected to the top surfaces of the two locking rods 106.

[0034] An mounting plate 113 is provided on the upper part of the two connecting vertical rods 112; two auxiliary pull rods 117 are symmetrically slidably connected inside the mounting plate 113; a fixed plug rod 119 is fixedly connected to the end of each of the two auxiliary pull rods 117; an auxiliary spring 118 is fixedly connected to the outside of each of the two fixed plug rods 119; the two fixed plug rods 119 are respectively inserted into the two connecting vertical rods 112.

[0035] The specific usage and function of this embodiment are as follows: The support column 101 supports the main body 1 of the workbench. After the soil sample is placed into the lower shear box 104 and the upper shear box 105, the operating handle 125 is rotated, which drives the control worm gear 124 to rotate. During the rotation of the control worm gear 124, the control worm wheel 123 is driven to rotate. The rotation of the control worm wheel 123 drives the feed screw 121 to rotate. During the rotation of the feed screw 121, the feed push rod 122 is moved. As the feed push rod 122 moves, it pushes the lower shear box 104 to move, causing the lower shear box 104 and the upper shear box 105 to press against the dial gauge 102. When the soil sample is placed into the lower shear box 104 and the upper shear box 105, the locking rod 106 is inserted into the upper shear box 105 and the lower shear box 104. As the locking rod 106 is inserted, it will squeeze the locking block 111, causing the locking block 111 to slide in the lower shear box 104 and squeeze the fixing spring 110. When the locking rod 106 is fully inserted... After the locking block 111 is aligned with the locking slot 107, the locking block 111 will return to its original position as the fixing spring 110 rebounds, and then insert into the locking slot 107 to lock the upper shear box 105 and the lower shear box 104. After the upper shear box 105 and the lower shear box 104 are pressed against the dial indicator 102, the operator only needs to press down the separating wedge 108 to squeeze the locking block 111 and the connecting spring 109. Pressing the pressure will cause the locking block 111 to slide within the lower shear box 104, disengaging it from the locking slot 107. Only then can the operator remove the locking rod 106 to release the fixation between the upper shear box 105 and the lower shear box 104. By pulling the auxiliary rod 117, the operator can move the fixed rod 119 and compress the auxiliary spring 118, causing the fixed rod 119 to disengage from the connecting vertical rod 112. Only then can the operator remove the mounting plate 113 and replace the pressure plate 115.

[0036] Example 2:

[0037] Based on Example 1, please refer to Figures 5 to 6 It includes: a control screw 114, a pressure plate 115, and balls 116. A control screw 114 is centrally threaded into the mounting plate 113; the bottom end face of the control screw 114 is fixedly connected to the pressure plate 115; and multiple sets of balls 116 are fixedly connected to the bottom end face of the pressure plate 115 in a ring array.

[0038] The specific usage and function of this embodiment are as follows: By rotating the control screw 114, the control screw 114 drives the pressure plate 115 to move downward and contact the sample cap. Then, the weight is hung on the weight application seat 103, so that the pressure plate 115 applies pressure to the sample. The ball bearing 116 reduces the friction between the sample cap and the pressure plate 115. Then, the operating handle 125 is rotated again, so that the feed push rod 122 pushes the shear box 104 to move, and the shear resistance of the soil is tested.

[0039] The following points should be noted in this article:

[0040] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0041] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0042] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A soil shear resistance testing device, comprising: The workbench body (1) has four support columns (101) fixedly connected in a rectangular array on its bottom end face; characterized in that a dial indicator (102) is provided on the left side of the top end face of the workbench body (1); a feed box (120) is fixedly connected in the center of the right side of the top end face of the workbench body (1); the feed box (120) is aligned with the dial indicator (102); a lower shear box (104) is provided on the right side of the top end face of the workbench body (1); the lower shear box (104) is aligned with the feed box (120); an upper shear box (105) is provided in the center of the upper part of the lower shear box (104); a weight application seat (103) is provided on the bottom end face of the workbench body (1); and two connecting vertical rods (112) are provided on the top end face of the weight application seat (103).

2. The soil shear resistance testing device as described in claim 1, characterized in that: A feed screw (121) is rotatably connected to the upper part of the feed box (120); a feed push rod (122) is threadedly connected to the left side of the feed screw (121); the feed push rod (122) is slidably connected inside the feed box (120); a control worm gear (123) is fixedly connected to the outside of the feed screw (121); a control worm (124) is rotatably connected to the lower part of the feed box (120); the control worm (124) meshes with the control worm gear (123); an operating handle (125) is coaxially fixedly connected to the right side of the control worm (124).

3. The soil shear resistance testing device as described in claim 1, characterized in that: Two locking rods (106) are symmetrically inserted into the upper shear box (105); each of the two locking rods (106) has a locking slot (107) on its outside; two locking blocks (111) are symmetrically slidably connected in the lower shear box (104); the two locking blocks (111) are aligned with the positions of the two locking slots (107) respectively; a fixing spring (110) is fixedly connected to the outside of each of the two locking blocks (111); the ends of the two fixing springs (110) are fixedly connected in the lower shear box (104).

4. The soil shear resistance testing device as described in claim 3, characterized in that: Each of the two locking rods (106) is slidably connected to a separating wedge (108); the two separating wedges (108) are aligned with the positions of the two locking blocks (111); a connecting spring (109) is fixedly connected to the upper part of each of the two separating wedges (108); the ends of the two connecting springs (109) are fixedly connected to the top surfaces of the two locking rods (106).

5. The soil shear resistance testing device as described in claim 1, characterized in that: An mounting plate (113) is provided on the upper part of the two connecting vertical rods (112); two auxiliary pull rods 1 (17) are symmetrically slidably connected inside the mounting plate (113); a fixed plug rod (119) is fixedly connected to the end of each of the two auxiliary pull rods (117); an auxiliary spring (118) is fixedly connected to the outside of each of the two fixed plug rods (119); the two fixed plug rods (119) are respectively inserted into the two connecting vertical rods (112).

6. The soil shear resistance testing device as described in claim 5, characterized in that: A control screw (114) is centrally threaded into the mounting plate (113); a pressure plate (115) is fixedly connected to the bottom end face of the control screw (114); and multiple sets of balls (116) are fixedly connected to the bottom end face of the pressure plate (115) in a ring array.

Images