Rock testing device for coal mine geological exploration
By designing a repeatedly liftable pallet and baffle structure, the problem of debris flying after rock samples is broken is solved, the safety of staff and the cleanliness of the experimental environment is improved, and the effective treatment of debris is achieved.
Patent Information
- Application Number
- CN202420912634.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-04-29
AI Technical Summary
In coal mine geological exploration, rock samples are prone to breaking after uniaxial compression test, causing debris to fly, endangering staff safety and increasing the difficulty of cleaning.
A rock test device for geological exploration of coal mines was designed, using the repeatedly lifted pallet structure and baffle mechanism, and the repeated lifting and resetting of the pallet is achieved through electric push rods, gear drives and return springs, and debris are shaken off in time. Block debris splash through the baffle.
It effectively reduces the steps for cleaning debris after rock samples are broken, prevents staff from being scratched by sharp or sharp debris, and reduces the cleaning needs for the environment around the single-axis compression test machine.
Smart Images
Figure CN222353653U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of coal mine geological exploration, in particular to a rock testing device for coal mine geological exploration. Background Art
[0002] In coal mine geological exploration, the rock properties and geological structural characteristics of coal seams have an important impact on coal mine exploration, production and safety management. Therefore, targeted rock tests are needed to obtain relevant geological information and rock property data of coal seams.
[0003] Common rock tests for coal mine geological exploration include rock physical and mechanical tests, rock physical property tests, and rock mineral composition analysis. Among them, rock physical and mechanical tests are usually conducted using a uniaxial compression test machine to measure the compressive strength of rock under uniaxial loading, providing a data basis for coal mining and safety design.
[0004] In the prior art, after the rock samples are squeezed by the uniaxial compression testing machine, the rock samples with poor compressive strength will be squeezed out by the uniaxial compression testing machine to form cracks or even break. After the rock samples are broken, some debris will fly due to excessive pressure. Some of the flying debris contain sharp or pointed parts, which can easily cause the staff to be damaged by the debris when cleaning the surface of the uniaxial compression testing machine later. Summary of the invention
[0005] The purpose of the utility model is to provide a rock testing device for coal mine geological exploration, which can repeatedly lift a support plate on which rock samples are placed so that debris above the support plate can be shaken off, reducing the steps of cleaning the debris above the support plate after the compression test of the rock samples, and preventing workers from being scratched by the sharp ends or sharp parts of the debris, so as to solve the problems raised in the above-mentioned background technology.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rock testing device for coal mine geological exploration, comprising a uniaxial compression testing machine and a support plate hinged to the lower side of the uniaxial compression testing machine, wherein a lifting component is provided inside the uniaxial compression testing machine, wherein the lifting component comprises two electric push rods fixedly connected to the inner side wall of the uniaxial compression testing machine, and a material blocking component is provided on both the front and rear sides of the uniaxial compression testing machine;
[0007] The output ends of the two electric push rods are fixedly connected with cylindrical racks, and two guide grooves are provided inside the lower side of the uniaxial compression testing machine. The two cylindrical racks are respectively slidably connected in the two guide grooves. Two gear drive structures are arranged inside the uniaxial compression testing machine, and the two cylindrical racks are respectively meshed with the two gear drive structures. The outer side of the gear drive structure on the left is fixedly connected with a first lifting plate, and the outer side of the gear drive structure on the right is fixedly connected with a second lifting plate. Two push rods are fixedly connected to the outer side of the hydraulic rod inside the uniaxial compression testing machine, and pressure sensors are fixedly connected on both sides of the interior of the uniaxial compression testing machine. After moving, the top ends of the two push rods are respectively overlapped with the lower sides of the pressure sensors, and a reset component is provided inside the uniaxial compression testing machine.
[0008] Preferably, the pressure sensor is electrically connected to the electric push rod, and the gear drive structure consists of a gear, a lead screw and a lead screw nut.
[0009] Preferably, the reset assembly comprises two movable grooves provided inside the uniaxial compression testing machine, and the first lifting plate and the second lifting plate are slidably connected in the two movable grooves respectively.
[0010] Preferably, the upper sides of the first lifting plate and the second lifting plate are both corrugated, and the first lifting plate and the second lifting plate overlap each other after the movement.
[0011] Preferably, rollers are overlapped on the upper sides of the first lifting plate and the second lifting plate, columns are sleeved on the outer sides of the two rollers, and the two columns are slidably connected in the movable groove.
[0012] Preferably, a return spring is sleeved on the outer side of the column, the top end of the return spring is fixedly connected to the inner top end of the movable groove, and the bottom end of the return spring is fixedly connected to the outer side of the column, and the top ends of the two columns pass through the uniaxial compression testing machine and are slidably overlapped with the lower side of the same support plate.
[0013] Preferably, the material blocking component includes four guide rails fixedly connected to the front and rear sides of the uniaxial compression testing machine, the opposite surfaces of the two guide rails on the same side of the uniaxial compression testing machine are slidably connected with the same baffle plate, and the opposite surfaces of the two baffle plates are respectively overlapped on the front and rear sides of the uniaxial compression testing machine.
[0014] Preferably, two limiting grooves are provided on both sides of the baffle, and latches are clamped in the four limiting grooves. The eight latches are respectively slidably connected to the front and rear sides of the uniaxial compression testing machine, and the latches pass through the guide rails.
[0015] Compared with the prior art, the beneficial effects of the utility model are:
[0016] 1. The column is repeatedly lifted by the first lifting plate and the second lifting plate, so that the column lifts the support plate repeatedly. As the support plate is repeatedly lifted and reset, the debris above the support plate will also be shaken off from above the support plate, reducing the steps of cleaning the debris above the support plate after the compression test of the rock sample, and preventing the staff from being scratched by the sharp ends or sharp parts of the debris;
[0017] 2. The front and rear sides of the uniaxial compression testing machine are shielded by baffles, which are locked by latches. Since the position of the baffles always corresponds to the position of the rock sample, when the rock sample is squeezed and crushed and debris splashes, the baffles will block the debris and prevent the debris from splashing everywhere. This not only prevents the staff from being scratched by the debris, but also reduces the steps for cleaning the environment around the uniaxial compression testing machine. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 This is the overall structural view of the utility model;
[0020] Figure 2 It is a schematic diagram of a half-section structure of the utility model;
[0021] Figure 3 It is a half-section structural schematic diagram of the guide groove of the utility model;
[0022] Figure 4 It is a structural schematic diagram of the first lifting plate of the utility model;
[0023] Figure 5 It is a structural schematic diagram of the second lifting plate of the utility model.
[0024] Description of reference numerals:
[0025] 1. Uniaxial compression testing machine; 2. Support plate; 3. Lifting component; 31. Electric push rod; 32. Cylindrical rack; 33. Guide groove; 34. Gear drive structure; 35. First lifting plate; 36. Second lifting plate; 37. Push rod; 38. Pressure sensor; 39. Reset assembly; 391. Movable groove; 392. Roller; 393. Column; 394. Reset spring; 4. Material blocking component; 41. Guide rail; 42. Baffle; 43. Limiting groove; 44. Latch. DETAILED DESCRIPTION
[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0027] The utility model provides a technical solution:
[0028] See also Figures 1 to 5 A rock testing device for coal mine geological exploration comprises a uniaxial compression testing machine 1 and a support plate 2 hinged to the lower side of the uniaxial compression testing machine 1, a lifting component 3 is arranged inside the uniaxial compression testing machine 1, and the lifting component 3 comprises two electric push rods 31 fixedly connected to the inner side wall of the uniaxial compression testing machine 1, and a material blocking component 4 is arranged on both the front and rear sides of the uniaxial compression testing machine 1;
[0029] The output ends of the two electric push rods 31 are fixedly connected with cylindrical racks 32, and two guide grooves 33 are provided inside the lower side of the uniaxial compression testing machine 1. The two cylindrical racks 32 are respectively slidably connected in the two guide grooves 33. Two gear drive structures 34 are arranged inside the uniaxial compression testing machine 1. The two cylindrical racks 32 are respectively meshed with the two gear drive structures 34. The outer side of the gear drive structure 34 on the left is fixedly connected with a first lifting plate 35, and the outer side of the gear drive structure 34 on the right is fixedly connected with a second lifting plate 36. The outer side of the hydraulic rod inside the uniaxial compression testing machine 1 is fixedly connected with two push rods 37. Pressure sensors 38 are fixedly connected on both sides of the interior of the uniaxial compression testing machine 1. After moving, the top ends of the two push rods 37 overlap with the lower sides of the pressure sensor 38 respectively, and a reset component 39 is provided inside the uniaxial compression testing machine 1.
[0030] The pressure sensor 38 is electrically connected to the electric push rod 31 , and the gear drive structure 34 is composed of a gear, a screw and a screw nut.
[0031] The reset assembly 39 includes two movable grooves 391 provided inside the uniaxial compression testing machine 1 , and the first lifting plate 35 and the second lifting plate 36 are slidably connected in the two movable grooves 391 , respectively.
[0032] The upper sides of the first lifting plate 35 and the second lifting plate 36 are both corrugated, and the first lifting plate 35 and the second lifting plate 36 overlap each other after moving.
[0033] Rollers 392 are overlapped on the upper sides of the first lifting plate 35 and the second lifting plate 36 . Posts 393 are sleeved on the outer sides of the two rollers 392 . The two posts 393 are slidably connected in the movable grooves 391 .
[0034] A return spring 394 is sleeved on the outer side of the column 393, the top end of the return spring 394 is fixedly connected to the inner top end of the movable groove 391, and the bottom end of the return spring 394 is fixedly connected to the outer side of the column 393. The top ends of the two columns 393 pass through the uniaxial compression testing machine 1 and are slidably overlapped with the lower side of the same support plate 2.
[0035] By adopting the above technical solution, first, a rock sample is placed on the support plate 2, and then a compression test is performed on the rock sample through the hydraulic rod inside the uniaxial compression test machine 1. When the test is over and the hydraulic rod moves upward, if the two push rods 37 on the outside of the hydraulic rod are both in contact with the pressure sensor 38, the pressure sensor 38 will transmit information to the external controller and control the two electric push rods 31 to push the cylindrical rack 32 upward. As the two cylindrical racks 32 move inside the guide groove 33 and the teeth are meshed with the gears inside the gear drive structure, the gears will drive the screw to rotate inside the uniaxial compression test machine 1, so that the screw nut outside the screw will move according to the thread direction outside the screw, and the two screw nuts will drive the first lifting plate 35 and the second lifting plate 36 to move closer to the middle and slide inside the two movable grooves 391;
[0036] Since the rollers 392 under the two columns 393 are always in contact with the upper sides of the first lifting plate 35 and the second lifting plate 36 respectively, and the two columns 393 are restricted in the movable groove 391, when the first lifting plate 35 and the second lifting plate 36 begin to move closer, the two rollers 392 will start to roll along the top of the first lifting plate 35 and the second lifting plate 36. When the two rollers 392 reach the top of the first lifting plate 35 and the second lifting plate 36, the column 393 will be lifted to the top and pass through the pair of support plates of the uniaxial compression testing machine. 2 is lifted up from below, and as the roller 392 continues to roll, the support plate 2 will also slowly reset. At this time, if the electric push rod 31 is pushed downward, the roller 392 will repeat the above steps and roll in the opposite direction, and the reset spring 394 always pushes the column 393. As the support plate 2 is repeatedly lifted and reset, the debris above the support plate 2 will also be shaken off from above the support plate 2, reducing the steps of cleaning the debris above the support plate 2 after the compression test of the rock sample, and preventing the staff from being scratched by the sharp ends or sharp parts of the debris.
[0037] Specifically, Figure 1 and Figure 2 As shown, the material blocking component 4 includes four guide rails 41 fixedly connected to the front and rear sides of the uniaxial compression testing machine 1, and the opposite surfaces of the two guide rails 41 on the same side of the uniaxial compression testing machine 1 are slidably connected with the same baffle plate 42, and the opposite surfaces of the two baffle plates 42 are overlapped on the front and rear sides of the uniaxial compression testing machine 1 respectively.
[0038] Two limiting grooves 43 are provided on both sides of the baffle 42 . Latch pins 44 are clamped in the four limiting grooves 43 . The eight latch pins 44 are slidably connected to the front and rear sides of the uniaxial compression testing machine 1 , respectively, and the latch pins 44 pass through the guide rails 41 .
[0039] By adopting the above technical scheme, first, when loading the rock sample, it is necessary to take out the two pins 44 located on the top from the two limit grooves 43 located on the top of the baffle 42. When the baffle 42 loses the restriction from the pins 44, the support plate 2 can be pushed upward. When the positions of the four limit grooves 43 on the surface of the baffle 42 correspond to the four pins 44 located inside the two guide rails 41, the four pins 44 can be inserted into the four limit grooves 43 respectively, so that the baffle 42 is locked again. At this time, the rock sample can be placed on the top of the tray. After the four pins 44 are pulled out, the baffle 42 will cover the uniaxial compression testing machine 1 again. Since the position of the baffle 42 always corresponds to the position of the rock sample, when the rock sample is squeezed and crushed and debris is splashed, the baffle 42 will block the debris to avoid the debris from splashing everywhere. This not only prevents the staff from being scratched by the debris, but also reduces the steps of cleaning the surrounding environment of the uniaxial compression testing machine 1.
[0040] Working principle: First, take the latch 44 out of the limiting groove 43 on the side of the baffle 42, and limit the baffle 42 by the latch 44 after it is lifted. When the rock sample is placed on the support plate 2, the baffle 42 can be lowered again, and then the rock sample is tested by the uniaxial compression tester 1. When the uniaxial compression tester 1 completes the experiment and lifts the hydraulic rod, the push rod 37 will gradually contact the pressure sensor 38, and after contact, the electric push rod 31 is started to guide the cylindrical rack 32 to the Pull it outward from the groove 33. At this time, the cylindrical rack 32 is engaged with the gear drive structure 34, so that the first lifting plate 35 and the second lifting plate 36 begin to move inside the movable groove 391 and gradually approach each other. The roller 392 above the first lifting plate 35 and the second lifting plate 36 will drive the column 393 to be repeatedly lifted according to the height of the first lifting plate 35 and the second lifting plate 36, and finally lift the support plate 2. When the roller 392 rolls downhill, the return spring 394 will push the column 393.
[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. A rock testing device for coal mine geological exploration, comprising a uniaxial compression testing machine (1) and a support plate (2) hinged to the lower side of the uniaxial compression testing machine (1), characterized in that: The uniaxial compression testing machine (1) is provided with a lifting component (3) inside, and the lifting component (3) comprises two electric push rods (31) fixedly connected to the inner side wall of the uniaxial compression testing machine (1), and the uniaxial compression testing machine (1) is provided with a material blocking component (4) on both the front and rear sides; The output ends of the two electric push rods (31) are fixedly connected to cylindrical racks (32); two guide grooves (33) are provided inside the lower side of the uniaxial compression testing machine (1); the two cylindrical racks (32) are slidably connected in the two guide grooves (33); two gear drive structures (34) are arranged inside the uniaxial compression testing machine (1); the two cylindrical racks (32) are respectively meshed with the two gear drive structures (34); the outer side of the gear drive structure (34) on the left side is fixedly connected to the gear drive structure (34) on the left side. A first lifting plate (35) is connected, and a second lifting plate (36) is fixedly connected to the outer side of the gear drive structure (34) located on the right side. Two lifting rods (37) are fixedly connected to the outer side of the hydraulic rod inside the uniaxial compression testing machine (1). Pressure sensors (38) are fixedly connected to both sides of the interior of the uniaxial compression testing machine (1). The top ends of the two lifting rods (37) overlap with the lower sides of the pressure sensors (38) after movement. A reset component (39) is provided inside the uniaxial compression testing machine (1).
2. A rock testing device for coal mine geological exploration according to claim 1, characterized in that: The pressure sensor (38) is electrically connected to the electric push rod (31), and the gear drive structure (34) is composed of a gear, a screw and a screw nut.
3. A rock testing device for coal mine geological exploration according to claim 1, characterized in that: The reset assembly (39) comprises two movable grooves (391) provided inside the uniaxial compression testing machine (1), and the first lifting plate (35) and the second lifting plate (36) are respectively slidably connected in the two movable grooves (391).
4. A rock testing device for coal mine geological exploration according to claim 1, characterized in that: The upper sides of the first lifting plate (35) and the second lifting plate (36) are both corrugated, and the first lifting plate (35) and the second lifting plate (36) overlap each other after moving.
5. The rock testing device for coal mine geological exploration according to claim 1, characterized in that: The upper sides of the first lifting plate (35) and the second lifting plate (36) are both overlapped with rollers (392), and the outer sides of the two rollers (392) are both sleeved with columns (393), and the two columns (393) are both slidably connected in the movable groove (391).
6. A rock testing device for coal mine geological exploration according to claim 5, characterized in that: A return spring (394) is sleeved on the outer side of the column (393), the top end of the return spring (394) is fixedly connected to the inner top end of the movable groove (391), and the bottom end of the return spring (394) is fixedly connected to the outer side of the column (393), and the top ends of the two columns (393) pass through the uniaxial compression testing machine (1) and are slidably overlapped with the lower side of the same support plate (2).
7. A rock testing device for coal mine geological exploration according to claim 1, characterized in that: The material blocking component (4) comprises four guide rails (41) fixedly connected to the front and rear sides of the uniaxial compression testing machine (1); the opposite surfaces of the two guide rails (41) on the same side of the uniaxial compression testing machine (1) are slidably connected to the same baffle plate (42); the opposite surfaces of the two baffle plates (42) are respectively overlapped on the front and rear sides of the uniaxial compression testing machine (1).
8. A rock testing device for coal mine geological exploration according to claim 7, characterized in that: Two limiting grooves (43) are provided on both sides of the baffle plate (42), and latches (44) are clamped in the four limiting grooves (43). The eight latches (44) are respectively slidably connected to the front and rear sides of the uniaxial compression testing machine (1), and the latches (44) penetrate the guide rail (41).