Tensile strength testing device for mine filling body

Abstract

The utility model discloses a mine filling body tensile strength testing device which comprises a supporting mechanism, a testing mechanism and a protection mechanism, and the testing mechanism and the protection mechanism are arranged on the top of the supporting mechanism. The testing mechanism comprises an upper clamp arranged above the top of the working plate in a sliding mode, a lower clamp matched with the upper clamp is arranged below the upper clamp, and the bottom of the lower clamp is fixedly connected with the top of the working plate. The device has the advantage of efficient protection, and solves the problems that when the filling body is broken due to the fact that the stretching value of the filling body exceeds the maximum stretching value, potential safety hazards such as fragment splashing and sudden energy release are possibly generated, and meanwhile operators and the testing environment are threatened.

Description

Technical Field

[0001] This utility model relates to the field of tensile strength testing technology for mine backfill bodies, specifically a device for testing the tensile strength of mine backfill bodies. Background Technology

[0002] Tensile strength testing of mine backfill is one of the important means to evaluate the performance of backfill materials. It is of great significance for ensuring mine safety and improving resource recovery rate. This test usually requires the use of specialized testing equipment.

[0003] Tensile strength testing primarily measures the maximum stress that a filling material can withstand by applying tensile force, thereby evaluating its mechanical properties. During the test, the specimen is fixed between the upper and lower clamps of the testing machine, and the tensile force is gradually increased at a constant rate until the specimen breaks. By recording the maximum load at fracture and the original dimensions of the specimen, the tensile strength of the filling material can be calculated.

[0004] However, existing tensile strength testing devices lack corresponding protective mechanisms. When testing mine backfill, if the backfill exceeds its maximum tensile value and breaks, it may cause safety hazards such as flying fragments and sudden release of energy, which pose a threat to operators and the testing environment. Utility Model Content

[0005] The purpose of this invention is to provide a tensile strength testing device for mine backfill, which has the advantages of high-efficiency protection and solves the safety hazards such as fragmentation and sudden energy release that may occur when the backfill breaks due to exceeding its maximum tensile value, which also poses a threat to operators and the testing environment.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a tensile strength testing device for mine backfill, comprising a support mechanism and a testing mechanism and a protective mechanism disposed on its top, wherein the support mechanism includes a working plate, and the top left and right sides of the working plate are respectively provided with sliding grooves.

[0007] The testing mechanism includes an upper clamp that is slidably disposed above the top of the work plate, and a lower clamp that cooperates with the upper clamp below the upper clamp, the bottom of the lower clamp being fixedly connected to the top of the work plate;

[0008] The protective mechanism includes protective covers corresponding to the left and right sides of the top of the working plate. The two protective covers are interlocked and protect the upper clamp and the lower clamp inside. The bottom of each of the two protective covers on the side away from each other is fixedly connected to a slider, and the slider is slidably connected to the slide groove.

[0009] As a preferred embodiment of the tensile strength testing device for mine backfill bodies of this utility model, handles are fixedly connected to the top left and right sides of the working plate, a workbench is fixedly connected to the bottom of the working plate, and support legs are fixedly connected to the four corners of the bottom of the workbench.

[0010] As a preferred embodiment of the tensile strength testing device for mine filling bodies of this utility model, a display screen and multiple control keys are fixedly connected to the front surface of the workbench.

[0011] As a preferred embodiment of the tensile strength testing device for mine backfill bodies of this utility model, a vertical frame is fixedly connected to the top rear side of the working plate, a telescopic cylinder is fixedly connected to the top front side of the vertical frame, the telescopic end of the telescopic cylinder extends to the lower interior of the vertical frame and is fixedly connected to the top of the upper clamp, and a fixing plate is fixedly connected to the rear side of the vertical frame.

[0012] As a preferred embodiment of the tensile strength testing device for mine backfill bodies of this utility model, a power motor is fixedly connected to the top of the fixed plate, a soundproof cover is provided outside the power motor, the bottom of the soundproof cover is fixedly connected to the top of the fixed plate, and the output shaft of the power motor extends to the outside of the soundproof cover and is fixedly connected to a worm gear.

[0013] As a preferred embodiment of the tensile strength testing device for mine backfill bodies of this utility model, the bottom of the worm gear is meshed with a worm wheel, the inner wall of the worm wheel is fixedly connected with a bidirectional threaded rod, the bidirectional threaded rod is rotatably disposed inside the upright frame, and each of the two bidirectional threaded rods is rotatably connected to a mounting plate at one end away from each other, and a fixing rod is fixedly connected to the bottom of each of the two mounting plates, and the ends of the two fixing rods away from the two mounting plates are fixedly connected to the left and right sides of the working plate.

[0014] As a preferred embodiment of the tensile strength testing device for mine filling bodies of this utility model, the two-way threaded rod has movable plates threadedly connected to both the left and right sides of its surface, and electric push rods are fixedly connected to the two movable plates on the side closer to each other. The telescopic ends of the two electric push rods are fixedly connected to the two sides away from each other.

[0015] As a preferred embodiment of the tensile strength testing device for mine backfill in this utility model, the two movable plates are internally slidably connected by the same horizontal limiting rod. The horizontal limiting rod is located below the bidirectional threaded rod and is fixedly connected to the upright frame. The left and right ends of the horizontal limiting rod are fixedly connected to the mounting plate on one side close to each other.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. This utility model uses upper and lower clamps to fix both ends of the sample, ensuring that the sample will not slip or fall off during the test. The loading system applies tensile force to the sample through the upper clamp, gradually increasing until the sample breaks. The measuring system records the applied force and the deformation of the sample in real time, and calculates the tensile strength of the sample through data analysis. When the sample breaks, the protective cover can effectively block flying fragments, protecting the operators and equipment. The slider is slidably connected to the groove, ensuring that the protective cover remains stable during the test and does not affect the accuracy of the test.

[0018] 2. This utility model uses a control key to start the power motor. The power motor, through a worm gear and worm wheel transmission, drives the bidirectional threaded rod to rotate. When the bidirectional threaded rod rotates, the moving plate moves inward along the horizontal limit rod, simultaneously causing the electric push rod to extend, thus engaging the protective covers and completely enclosing the sample. Starting the power motor again via the control key causes the bidirectional threaded rod to rotate in the opposite direction, moving the moving plate outward and retracting the electric push rod, opening the protective covers. Through this design, the device can not only accurately test the tensile strength of mine backfill but also provide necessary safety protection during the testing process, ensuring the safety of operators and equipment. Furthermore, the human-machine interface and automated design make operation more convenient and intuitive. Attached Figure Description

[0019] Figure 1 This is a three-dimensional drawing of the present invention;

[0020] Figure 2 This is a side view of the present invention;

[0021] Figure 3 This is a schematic diagram of the support mechanism of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the testing mechanism of this utility model;

[0023] Figure 5 This is a schematic diagram of the protective mechanism of this utility model.

[0024] In the diagram: 100, Support mechanism; 101, Working plate; 102, Slide groove; 103, Handle; 104, Workbench; 105, Support leg; 106, Display screen; 107, Control key; 200, Testing mechanism; 201, Stand; 202, Telescopic cylinder; 203, Upper clamp; 204, Lower clamp; 205, Fixing plate; 300, Protective mechanism; 301, Protective cover; 302, Slider; 303, Electric push rod; 304, Moving plate; 305, Bidirectional threaded rod; 306, Mounting plate; 307, Fixing rod; 308, Horizontal limit rod; 309, Worm gear; 310, Worm; 311, Power motor; 312, Silencer. Detailed Implementation

[0025] Please see Figures 1-5 A tensile strength testing device for mine backfill bodies includes a support mechanism 100, a testing mechanism 200 and a protective mechanism 300 disposed on top of it. The support mechanism 100 includes a working plate 101, and grooves 102 are correspondingly opened on the left and right sides of the top of the working plate 101.

[0026] The working plate 101 serves as the basic platform for the entire device, providing stable support. The slide groove 102 is located on the top left and right sides of the working plate 101 to guide the sliding of the protective mechanism 300.

[0027] Furthermore, the testing mechanism 200 includes an upper clamp 203 that is slidably disposed above the top of the work plate 101, and a lower clamp 204 that cooperates with the upper clamp 203 below it, with the bottom of the lower clamp 204 fixedly connected to the top of the work plate 101.

[0028] The upper clamp 203 is slidably disposed above the top of the working plate 101 to fix the upper end of the sample, and the lower clamp 204 is fixed to the top of the working plate 101 and cooperates with the upper clamp 203 to fix the lower end of the sample.

[0029] Furthermore, the protective mechanism 300 includes protective covers 301 correspondingly disposed on the left and right sides of the top of the work plate 101. The two protective covers 301 are interlocked and protect the upper clamp 203 and the lower clamp 204 inside. The bottom of each of the two protective covers 301 on the side away from each other is fixedly connected to a slider 302, and the slider 302 is slidably connected to the slide groove 102.

[0030] The protective cover 301 is set on the top left and right sides of the working plate 101. The two protective covers 301 are interlocked to protect the upper clamp 203 and the lower clamp 204 inside. The slider 302 is fixed at the bottom of the two protective covers 301 on the side away from each other and is slidably connected with the slide groove 102 to ensure that the protective cover 301 can slide along the slide groove 102.

[0031] The upper clamp 203 and lower clamp 204 fix the two ends of the sample respectively, ensuring that the sample will not slip or fall off during the test. The loading system applies a tensile force to the sample through the upper clamp 203, gradually increasing it until the sample breaks. The measurement system records the applied force and the deformation of the sample in real time, and calculates the tensile strength of the sample through data analysis. When the sample breaks, the protective cover 301 can effectively block flying fragments, protecting the operators and equipment. The slider 302 is slidably connected to the slide groove 102 to ensure that the protective cover 301 remains stable during the test and does not affect the accuracy of the test.

[0032] Furthermore, handles 103 are fixedly connected to the top left and right sides of the work plate 101, and a workbench 104 is fixedly connected to the bottom of the work plate 101. Support legs 105 are fixedly connected to the four corners of the bottom of the workbench 104.

[0033] Handles 103 are fixedly connected to the top left and right sides of the work plate 101, making it convenient for operators to move or adjust the position of the device. The workbench 104 is fixedly connected to the bottom of the work plate 101, providing additional support and stability. Support legs 105 are fixedly connected to the four corners of the bottom of the workbench 104, ensuring that the entire device is placed stably on the ground.

[0034] Furthermore, a display screen 106 and multiple control keys 107 are fixedly connected to the front surface of the workbench 104.

[0035] The display screen 106 is fixedly connected to the front surface of the workbench 104 and is used to display test data and status information. The control keys 107 are fixedly connected to the front surface of the workbench 104 and are used to control various operations during the test.

[0036] Furthermore, a stand 201 is fixedly connected to the rear top of the work plate 101, and a telescopic cylinder 202 is fixedly connected to the front top of the stand 201. The telescopic end of the telescopic cylinder 202 extends to the lower interior of the stand 201 and is fixedly connected to the top of the upper clamp 203. A fixing plate 205 is fixedly connected to the rear side of the stand 201.

[0037] The upright frame 201 is fixedly connected to the top rear side of the work plate 101 to provide vertical support. The telescopic cylinder 202 is fixedly connected to the top front side of the upright frame 201, and its telescopic end extends to the lower interior of the upright frame 201 and is fixedly connected to the top of the upper clamp 203 to apply tension.

[0038] Furthermore, a power motor 311 is fixedly connected to the top of the fixed plate 205, and a soundproof cover 312 is provided outside the power motor 311. The bottom of the soundproof cover 312 is fixedly connected to the top of the fixed plate 205, and the output shaft of the power motor 311 extends to the outside of the soundproof cover 312 and is fixedly connected to a worm gear 310.

[0039] Furthermore, a worm gear 309 is meshed with the bottom of the worm 310, and a bidirectional threaded rod 305 is fixedly connected to the inner wall of the worm gear 309. The bidirectional threaded rod 305 is rotatably disposed inside the upright frame 201. Each of the two bidirectional threaded rods 305 is rotatably connected to a mounting plate 306 at one end away from each other. A fixing rod 307 is fixedly connected to the bottom of each of the two mounting plates 306. The ends of the two fixing rods 307 away from the two mounting plates 306 are fixedly connected to the left and right sides of the working plate 101.

[0040] Furthermore, movable plates 304 are threadedly connected to both the left and right sides of the surface of the bidirectional threaded rod 305. Electric push rods 303 are fixedly connected to the side of the two movable plates 304 that are close to each other. The telescopic ends of the two electric push rods 303 are fixedly connected to the side of the two protective covers 301 that are far away from each other.

[0041] Furthermore, the two movable plates 304 are internally slidably connected by the same horizontal limiting rod 308. The horizontal limiting rod 308 is located below the bidirectional threaded rod 305 and is fixedly connected to the upright 201. The left and right ends of the horizontal limiting rod 308 are fixedly connected to the mounting plate 306 on the side close to each other.

[0042] The power motor 311 is activated by control key 107. Through the transmission of worm gear 310 and worm wheel 309, the power motor 311 drives the bidirectional threaded rod 305 to rotate. When the bidirectional threaded rod 305 rotates, the moving plate 304 moves inward along the horizontal limit rod 308, simultaneously causing the electric push rod 303 to extend, thus engaging the protective covers 301 and completely enclosing the sample. Activating the power motor 311 by control key 107 reverses the rotation of the bidirectional threaded rod 305, causing the moving plate 304 to move outward, retracting the electric push rod 303, and opening the protective cover 301. Through this design, the device can not only accurately test the tensile strength of mine backfill, but also provide necessary safety protection during the testing process, ensuring the safety of operators and equipment. Furthermore, the human-machine interface and automated design make operation more convenient and intuitive.

[0043] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tensile strength testing device for mine backfill, comprising a support mechanism (100) and a testing mechanism (200) and a protective mechanism (300) disposed on its top, wherein the support mechanism (100) includes a working plate (101), and the working plate (101) has corresponding grooves (102) on its top left and right sides, characterized in that: The testing mechanism (200) includes an upper clamp (203) that is slidably disposed above the top of the work plate (101), and a lower clamp (204) that cooperates with the upper clamp (203) is provided below the upper clamp (203), and the bottom of the lower clamp (204) is fixedly connected to the top of the work plate (101). The protective mechanism (300) includes protective covers (301) corresponding to the left and right sides of the top of the working plate (101). The two protective covers (301) are interlocked and protect the upper clamp (203) and the lower clamp (204) inside. The bottom of the two protective covers (301) on opposite sides is fixedly connected to a slider (302). The slider (302) is slidably connected to the slide groove (102).

2. The tensile strength testing device for mine backfill as described in claim 1, characterized in that: The work plate (101) is fixedly connected to handles (103) on the top left and right sides, and a workbench (104) is fixedly connected to the bottom of the work plate (101). Support legs (105) are fixedly connected to the four corners of the bottom of the workbench (104).

3. The tensile strength testing device for mine backfill as described in claim 2, characterized in that: The front surface of the workbench (104) is fixedly connected to a display screen (106) and multiple control keys (107).

4. The tensile strength testing device for mine backfill as described in claim 1, characterized in that: A stand (201) is fixedly connected to the rear top of the work plate (101), and a telescopic cylinder (202) is fixedly connected to the front top of the stand (201). The telescopic end of the telescopic cylinder (202) extends to the lower interior of the stand (201) and is fixedly connected to the top of the upper clamp (203). A fixing plate (205) is fixedly connected to the rear side of the stand (201).

5. The tensile strength testing device for mine backfill as described in claim 4, characterized in that: A power motor (311) is fixedly connected to the top of the fixed plate (205). A soundproof cover (312) is provided outside the power motor (311). The bottom of the soundproof cover (312) is fixedly connected to the top of the fixed plate (205). The output shaft of the power motor (311) extends to the outside of the soundproof cover (312) and is fixedly connected to a worm gear (310).

6. The tensile strength testing device for mine backfill as described in claim 5, characterized in that: The worm (310) is meshed with a worm wheel (309) at its bottom. A bidirectional threaded rod (305) is fixedly connected to the inner wall of the worm wheel (309). The bidirectional threaded rod (305) is rotatably disposed inside the stand (201). Each of the two bidirectional threaded rods (305) is rotatably connected to a mounting plate (306) at one end away from the other. Each of the two mounting plates (306) is fixedly connected to a fixing rod (307) at its bottom. The two fixing rods (307) are fixedly connected to the left and right sides of the working plate (101) at one end away from the two mounting plates (306).

7. The tensile strength testing device for mine backfill as described in claim 6, characterized in that: The two-way threaded rod (305) has moving plates (304) threadedly connected to both sides of its surface. The two moving plates (304) are fixedly connected to electric push rods (303) on the side closer to each other. The telescopic ends of the two electric push rods (303) are fixedly connected to the side away from each other of the two (301).

8. The tensile strength testing device for mine backfill as described in claim 7, characterized in that: The two movable plates (304) are internally slidably connected by the same horizontal limiting rod (308). The horizontal limiting rod (308) is located below the bidirectional threaded rod (305) and is fixedly connected to the upright frame (201). The left and right ends of the horizontal limiting rod (308) are fixedly connected to the mounting plate (306) on one side close to each other.

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