A fine resin anchoring agent test block manufacturing apparatus and method

Abstract

This invention discloses a refined resin anchoring agent test block preparation device, comprising a test block material kneading component, a test block preparation component, and a test block pressing component. The test block material kneading component includes a hollow mixing cylinder and a kneading unit, the kneading unit being installed inside the hollow mixing cylinder and capable of extension and retraction. The test block pressing component is installed at the upper end of the test block preparation component. This invention also discloses a refined resin anchoring agent test block preparation method. The test block material kneading component of this invention performs the mixing operation for preparing the resin anchoring agent test block, and the resin anchoring agent test block is cast through the test block preparation component and the test block pressing component. Simultaneously, by setting a kneading unit within the test block material kneading component for the kneading operation, the mixing before test block preparation is more uniform, allowing for more effective control of the mixing degree between anchoring agent components, thereby reducing the dispersion of test data.

Description

Technical Field

[0001] This invention relates to the field of resin anchoring agent preparation technology, specifically to a device and method for preparing refined resin anchoring agent test blocks. Background Technology

[0002] Resin anchoring agents cure quickly (3-5 minutes) and have high strength, enabling rapid on-site support in mines and foundation pits. Their simple construction process has led to their widespread application. They are generally composed of unsaturated polyester resin, high-strength fillers, curing agents, and accelerators. As a primary material for mine support, resin anchoring agents can bond metallic and non-metallic materials of the same type or between each other. They offer advantages such as no expansion or extrusion pressure on the foundation hole and unlimited anchoring depth.

[0003] The resin anchoring agent uses unsaturated polyester resin as a binder, coarse and fine stone powder as aggregate, dimethylaniline as an accelerator, and finally benzoyl peroxide (BPO) or a mixture of benzoyl peroxide (BPO) and 2,4-dichlorobenzoyl peroxide (DC) as curing agents. Because the nitrogen atom of the accelerator dimethylaniline has a pair of unbonded electrons, it first reacts with benzoyl peroxide, causing it to undergo heterogeneous cleavage. The reaction has a high heat effect, releasing enough heat to thermally decompose benzoyl peroxide into a large number of free radicals. These free radicals can then react with the unsaturated polyester resin and styrene. The linear unsaturated polyester resin is then copolymerized to produce a cured, three-dimensionally cross-linked network structure. Through three stages—gelation, hardening, and complete curing—the unsaturated resin anchoring agent transforms from a gel-like plastic body into a hard solid, ultimately bonding the rod to the surrounding rock of the borehole.

[0004] As mentioned above, resin anchoring agent is a substance formed by the reaction of resin putty (resin, coarse stone powder, fine stone powder) and curing agent. According to MT146.1-2011 Resin Anchor Rods - Part 1 - Anchoring Agent, resin anchoring agents are required to undergo testing for their uniaxial compressive strength, anchoring force, consistency, and thermal stability. The mechanical properties of the cured resin anchoring agent are mainly achieved through its uniaxial compressive strength. However, as the main bonding layer in underground engineering, the resin anchoring agent is primarily subjected to shear strength. Theoretical or numerical calculations require parameters such as internal friction angle, cohesion, shear strength, elastic modulus, and shear modulus. However, to measure these data, uniaxial compressive strength, shear strength, and triaxial tests of the cured resin anchoring agent are necessary. However, the specifications MT146.1-2011 (Resin Anchors - Part 1 - Anchoring Agents) and GB / T2567-2021 (Test Methods for Performance of Resin Castings) specify the required size of the test blocks for the mechanical tests of resin anchoring agents. Furthermore, while MT146.1-2011 specifies that the compressive strength of resin anchoring agents is determined by mold making, GB / T2567-2021 addresses significant differences in the composition of resin materials and resin anchoring agents.

[0005] Existing resin anchor compressive strength molds are nine-square grid molds, capable of producing only 40×40×40mm cube specimens for uniaxial compressive strength testing. This single specimen type makes it impossible to test the parameters listed above. Resin anchors are composed of stone powder and resin, with a composition similar to concrete, making it ideal to use concrete or rock material mechanics testing systems. While concrete and rock can be tested by creating large blocks or rock masses and drilling corresponding specimens using a core drill, resin anchors release heat rapidly and significantly during curing. If large blocks are used, the specimens are prone to cracking due to high thermal stress in the center. Furthermore, the optimal approach for testing the mechanical parameters of resin anchor materials is through concrete or rock material mechanics testing systems, with specimens ideally made directly from molds. Resin anchor putty has high viscosity before curing, cures quickly, and its high strength causes it to adhere to the mold, making it difficult to remove. Meanwhile, if the resin anchoring agent is not mixed evenly before the test blocks are made, dispersion problems will occur during the subsequent test block preparation.

[0006] Patent application CN111331762A discloses a process for preparing an epoxy resin putty mold. The application includes the following steps: (1) setting a releaseable adhesive paper on the inner wall of the mold cavity; (2) laying cured epoxy resin bricks in the mold cavity, filling the spaces between adjacent epoxy resin bricks with epoxy resin putty, and filling the gaps between the epoxy resin bricks and the inner wall of the mold cavity with epoxy resin putty, so that multiple epoxy resin bricks are connected into a whole by epoxy resin putty; (3) after the epoxy resin putty in step (2) is cured, the entire epoxy resin putty mold is formed. This invention uses pre-made cured epoxy resin bricks bonded together with freshly prepared epoxy resin putty to form an integral epoxy resin putty mold, which is convenient for molding, convenient for construction, saves curing time, and improves production efficiency. It can be seen that the above is a preparation process, mainly for preparing a mold using epoxy resin as a material, rather than for manufacturing epoxy resin putty.

[0007] Patent application CN114589791A discloses a concrete test block mold device for construction engineering that facilitates demolding. The application includes a base plate, with support plates fixedly connected to the left and right sides of the upper end face of the base plate. A test block mold body is disposed between the support plates, and connecting shafts are fixedly connected to the left and right end faces of the test block mold body. One end of each connecting shaft is connected to the side of a support plate via a bearing. A flipping adjustment mechanism is disposed on the right side of the test block mold body, and a demolding template is disposed on the inner bottom surface of the test block mold body. This invention allows for quick and convenient flipping of the test block mold body via the flipping adjustment mechanism, effectively reducing the labor intensity of workers and improving the ease of use of the concrete test block mold. This invention mainly targets the demolding of larger concrete test blocks, primarily achieved through a demolding template, but it does not solve the aforementioned problems.

[0008] Utility model patent CN217359238U discloses an easily detachable concrete specimen mold. This patent includes a base plate with at least two sets of first mounting grooves. Side plates are snapped into the first mounting grooves, and the side plates are detachably connected to the base plate. Multiple sets of baffles are installed on the base plate, with the baffles evenly spaced. Locking bolts are installed between the multiple sets of side plates, providing a continuous connection between them. This utility model solves the technical problem of difficult and inefficient demolding of specimens. However, it does not solve the aforementioned problems.

[0009] Patent application CN110126074A discloses a concrete specimen mold with adjustable dimensions and easy disassembly. The application includes a trough-shaped bottom plate, trough-shaped end plates, and inverted T-shaped side plates. An inverted T-shaped side plate is provided on each side of the trough-shaped bottom plate 1. The front and rear sides of the first waist are stacked on the long flanges of the inverted T-shaped side plates. The distance from the left end of the web plate to the left first leg and the distance from the right end of the web plate to the first leg are both equal to the thickness of the second waist. The second waist 21 of the trough-shaped end plate is inserted into the gap between the end of the inverted T-shaped side plate and the first waist. The end of the web plate is inserted along the sliding grooves on the front and rear sides of the second waist. The second leg is attached to the outside of the web plate. The trough-shaped bottom plate, the left and right trough-shaped end plates, and the front and rear inverted T-shaped side plates form the inner cavity of the mold. Distance scales are provided on the upper edge of the web plate. A partition is inserted into the inner cavity of the mold in an orientation perpendicular to the web plate and the first waist. A locking device is provided between the partition and the web plate. This invention facilitates assembly and demolding, allows for length adjustment during trial molding, and is convenient for processing, quick to produce, and low in cost. However, it does not solve the problems mentioned above. Summary of the Invention

[0010] The technical problem to be solved by the present invention is to provide a device for making a more uniformly mixed and refined resin anchoring agent test block.

[0011] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0012] A fine resin anchoring agent test block preparation equipment includes a test block material kneading component, a test block preparation component, and a test block covering component;

[0013] The test block material kneading assembly includes a hollow mixing cylinder and a kneading unit. The kneading unit is installed inside the hollow mixing cylinder and is retractable.

[0014] The test block covering assembly is installed on top of the test block fabrication assembly.

[0015] Advantages: The test block material kneading assembly of the present invention performs the mixing operation of resin anchoring agent test block preparation, and the resin anchoring agent test block is cast through the test block making assembly and the test block covering assembly. Simultaneously, by incorporating a kneading unit within the test block material kneading assembly, the mixing before test block preparation is more uniform, allowing for more effective control over the mixing degree between anchoring agent components, thereby reducing the dispersion of test data.

[0016] Preferably, the test block material kneading assembly further includes a kneading shell, a negative pressure vacuum motor, a kneading arm speed controller, a power plug, and a polyester film;

[0017] The hollow mixing cylinder is installed inside the kneading shell; the polyester film is attached to the inner wall and bottom of the hollow mixing cylinder; the negative pressure suction motor, the kneading arm speed controller and the power plug are all installed on the kneading shell;

[0018] The hollow mixing cylinder has multiple negative pressure suction holes on its side wall; the negative pressure suction holes are connected to a negative pressure suction motor.

[0019] The kneading arm speed controller is connected to the kneading unit.

[0020] Preferably, the hollow mixing cylinder includes an outer wall and an inner wall, with the outer wall fitted over the outer side of the inner wall.

[0021] Preferably, the kneading unit includes a fixed support, a kneading rear arm, a kneading forearm, a first fixed rotating shaft, a second fixed rotating shaft, and a film clamping end;

[0022] The fixed support is fixedly installed on the side wall of the hollow mixing cylinder. One end of the kneading rear arm is rotatably installed on the fixed support through the first fixed rotating shaft. The other end of the kneading rear arm is rotatably installed on one end of the kneading front arm through the second fixed rotating shaft. A film clamping end is rotatably installed on the other end of the kneading front arm.

[0023] Preferably, the kneading unit further includes an arc-shaped kneading head and a fixing spring assembly;

[0024] The arc-shaped kneading head is a semi-circular rod-shaped structure. One end of the arc-shaped kneading head is connected to the side of the kneading forearm away from the kneading forearm, and the arc-shaped kneading head is located at the lower end of the kneading forearm.

[0025] The fixed spring assembly has multiple springs and is installed between the kneading forearm and the arc-shaped kneading head.

[0026] Preferably, there are six kneading units, which are symmetrically and evenly arranged on the side wall of the hollow mixing cylinder.

[0027] Preferably, the test block manufacturing assembly includes a mold base plate, a test block mold, a test block forming component, a limiting post, a manual clamping unit, and a heating resistance wire;

[0028] The test block mold is fixedly installed on the mold base plate; the interior of the test block mold is provided with multiple turns of heating resistance wire wound from top to bottom, the heating resistance wire is insulated from the test block mold, and the test block mold is provided with a negative pressure evacuation hole at the middle of the heating resistance wire.

[0029] The test block molded part is installed inside the test block mold.

[0030] Multiple limiting posts are installed on the left and upper sides of the test block mold; manual clamping units are installed on the right and lower sides of the test block mold.

[0031] Preferably, the manual clamping unit includes a clamping screw rod component, a clamping positioning pin, and a clamping pad;

[0032] The clamping screw rod component is fixedly installed on the mold pad by clamping positioning pins and is connected to the test block mold. The clamping pad is installed between the test block mold and the clamping screw rod component.

[0033] Preferably, the test block mold is made of stainless steel.

[0034] Preferably, the test block covering assembly includes a presser connecting rod, a retractable airbag, a rotating connecting shaft, a presser vertical connecting rod, and a vertical connecting rod hook;

[0035] A retractable airbag is provided in the middle of the lower compressor connecting rod; vertical connecting rods of the lower compressor are respectively installed at the four ends of the lower compressor connecting rod via rotating connecting shafts, and hooks of the vertical connecting rods are installed at the bottom of the vertical connecting rods of the lower compressor.

[0036] The mold base plate has four presser connecting buckles, which can cooperate with the vertical connecting rod hooks.

[0037] The present invention also discloses a method for manufacturing test blocks of refined resin anchoring agent using the above-mentioned equipment, comprising the following steps:

[0038] S1. Place the polyester film that matches the kneading component of the test block material at the bottom and inner wall of the mixing tank, turn on the negative pressure suction motor, and adsorb the polyester film onto the inner wall of the hollow mixing tank.

[0039] S2. Shrink all the kneading units, place another polyester film in the test block material kneading assembly, and clamp the four ends of the polyester film through the film clamping end of the kneading unit. Place the weighed raw materials in the center of the polyester film in sequence, turn on the power supply, connect the power supply, and adjust the kneading speed and kneading time through the kneading arm speed controller.

[0040] S3. After turning on the kneading arm speed controller, ensure that the kneading units on the diameter line of the six kneading units are in pairs. During operation, the two kneading units push each other. After the two kneading units on one diameter line push each other 2-3 times, control the kneading units of other groups to work in a clockwise or counterclockwise direction. When the stirring time is reached, stop the kneading unit and take out the polyester film containing the resin anchoring agent.

[0041] S4. Casting of resin anchoring agent test blocks: After arranging the upper outer wall of the test block molding component, place the test block molding component inside the test block mold to form different test block production spaces inside. Connect the manual clamping unit to the mold base plate through the clamping positioning pin. By rotating the manual clamping units on the right and lower sides of the mold base plate, the clamping pad block is pushed inward to clamp the test block mold.

[0042] S5. After the test block manufacturing components are assembled, the polyester film is adsorbed onto the inner wall through a negative pressure device, and the stirred resin anchoring agent material is placed on the polyester film of the test block manufacturing components.

[0043] S6. After placing the mixed resin anchoring agent material into the test block making assembly, connect the vertical connecting rod hooks of the test block covering assembly on both sides of the test block making assembly to the pressure connector of the test block making assembly. At this time, keep the retractable airbag in the shortened state. After the test block negative pressure assembly is installed, activate the retractable airbag. The retractable airbag controls the downward pressure height of the test block to compress the test block.

[0044] Compared with the prior art, the beneficial effects of the present invention are:

[0045] (1) The test block material kneading assembly of the present invention performs the mixing operation of resin anchoring agent test block preparation, and the resin anchoring agent test block is cast through the test block making assembly and the test block covering assembly. At the same time, by setting a kneading unit in the test block material kneading assembly to perform the kneading operation, the mixing before test block preparation is more uniform, and the degree of mixing between anchoring agent components can be more effectively controlled, thereby controlling and reducing the dispersion of test data.

[0046] (2) The present invention provides a polyester film in the test block material kneading component and the test block making component and uses a negative pressure device to adsorb it, which ensures that there is no adhesion between the made test block and the mold, thus fundamentally solving the problem of difficult cleaning in the later stage.

[0047] (3) The present invention adopts a modular structural design, which can adapt to the production of different forms of test blocks in mechanical testing.

[0048] (4) The test block preparation component of the present invention is equipped with a heating resistance wire, which can simulate different temperature environments and can accurately help to study the mechanical properties of resin anchoring agent under different ground temperature environments.

[0049] (5) The present invention, through a simple test block covering assembly, can more accurately control the degree of compaction, compared with the conventional method of compaction by hammering a cover plate. This can reduce the dispersion of test data from the source. Attached Figure Description

[0050] Figure 1 This is a top view of the test block material kneading assembly according to an embodiment of the present invention;

[0051] Figure 2 This is a schematic diagram of the overall structure of the hollow mixing cylinder of the test block material kneading assembly according to an embodiment of the present invention.

[0052] Figure 3 This is a schematic diagram of the kneading unit of the test block material kneading assembly according to an embodiment of the present invention;

[0053] Figure 4 This is a top view of the test block mold according to an embodiment of the present invention;

[0054] Figure 5 This is a left view of the test block mold according to an embodiment of the present invention;

[0055] Figure 6 This is an outer wall view of the test block mold according to an embodiment of the present invention;

[0056] Figure 7 This is a schematic diagram of the structure of the test block mold of the test block mold according to an embodiment of the present invention;

[0057] Figure 8 This is a top view of the test block covering assembly according to an embodiment of the present invention;

[0058] Figure 9 This is a front view of the test block covering assembly according to an embodiment of the present invention;

[0059] In the diagram: 1. Test block material kneading assembly; 11. Kneading shell; 12. Hollow mixing cylinder; 121. Outer wall; 122. Inner wall; 123. Negative pressure extraction port; 13. Kneading unit; 131. Fixed support; 132. Kneading rear arm; 133. Kneading front arm; 134. First fixed rotating shaft; 135. Second fixed rotating shaft; 136. Film clamping end; 137. Arc-shaped kneading head; 138. Fixed spring assembly; 14. Negative pressure extraction motor; 15. Kneading arm speed controller; 2. Test block fabrication assembly; 21. Mold base plate; 211 1. Presser connecting buckle; 22. Test block mold; 221. Negative pressure suction through hole; 23. Test block forming part; 231. Negative pressure suction seam; 232. Negative pressure suction connecting hole; 233. Negative pressure suction pipe; 24. Limiting post; 25. Manual clamping unit; 251. Clamping screw rod assembly; 252. Clamping positioning pin; 253. Clamping pad; 26. Heating resistance wire; 3. Test block covering assembly; 31. Presser connecting rod; 32. Telescopic airbag; 33. Rotary connecting shaft; 34. Presser vertical connecting rod; 35. Vertical connecting rod hook. Detailed Implementation

[0060] To facilitate understanding of the technical solution of the present invention by those skilled in the art, the technical solution of the present invention will now be further described in conjunction with the accompanying drawings.

[0061] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0062] See Figure 1 , Figure 4 and Figure 8 This embodiment discloses a refined resin anchoring agent test block preparation equipment, including a test block material kneading component 1, a test block preparation component 2, and a test block covering component 3.

[0063] See Figures 1 to 3 The test block material kneading assembly 1 includes a kneading shell 11, a hollow stirring cylinder 12, a kneading unit 13, a negative pressure air extraction motor 14, a kneading arm speed controller 15, and a polyester film.

[0064] The hollow mixing cylinder 12 is installed inside the kneading shell 11, the kneading unit 13 is installed inside the hollow mixing cylinder 12, and the polyester film is attached to the inner wall and bottom of the hollow mixing cylinder 12; the negative pressure suction motor 14 and the kneading arm speed controller 15 are both installed on the kneading shell 11.

[0065] The hollow mixing tank 12 is a hollow cylindrical structure, including an outer wall 121 and an inner wall 122, with the outer wall 121 fitted over the inner wall 122. Multiple symmetrically distributed vertical elongated negative pressure suction holes 123 are provided on the side wall of the hollow mixing tank 12. A negative pressure suction motor 14 is connected to the negative pressure suction holes 123. When the negative pressure suction motor 14 operates, it creates a negative pressure in the negative pressure suction holes 123, firmly adsorbing the polyester film attached to the side wall of the hollow mixing tank 12 onto the side wall. The entire mixing space is protected by the polyester film, avoiding the problem of difficult cleaning after the resin anchoring agent solidifies.

[0066] The kneading unit 13 includes a fixed support 131, a kneading rear arm 132, a kneading forearm 133, a first fixed rotating shaft 134, a second fixed rotating shaft 135, and a film clamping end 136.

[0067] The fixed support 131 is fixedly installed on the side wall of the hollow mixing tank 12. One end of the kneading rear arm is rotatably installed on the fixed support 131 through the first fixed rotating shaft 134. The other end of the kneading rear arm is rotatably installed on one end of the kneading front arm through the second fixed rotating shaft 135. The other end of the kneading front arm is rotatably installed with a film clamping end 136.

[0068] Multiple kneading units 13 are evenly installed on the side wall of the hollow mixing tank 12. In this embodiment, six kneading units 13 are symmetrically and evenly arranged, and the six kneading arms are fixed at the same height. The kneading units 13 are connected to the kneading arm speed controller 15, which controls the kneading speed and kneading time of the kneading units 13. The specific kneading speed and kneading time are mainly controlled according to the gelation time of the resin anchoring agent.

[0069] In this embodiment, the kneading unit 13 further includes an arc-shaped kneading head 137 and a fixed spring assembly 138. The arc-shaped kneading head is a semi-circular rod-shaped structure, with one end connected to the side of the kneading forearm 133 away from the kneading forearm 133, and the arc-shaped kneading head located at the lower end of the kneading forearm 133. The fixed spring assembly 138 has multiple springs and is installed between the kneading forearm 133 and the arc-shaped kneading head. Through the connection of the fixed spring assembly 138, the arc-shaped kneading head can always remain horizontal with the bottom of the kneading forearm 133 when the kneading forearm 133 extends and retracts.

[0070] In the specific working process of the kneading unit 13, firstly, a polyester film is placed in the hollow mixing tank 12, and all the kneading units 13 are contracted and clamped around the polyester film through the film clamping end 136. Then, the weighed resin putty is placed in the center of the polyester film, and the measured curing agent is placed in the upper center of the resin putty. The power is connected through the power plug, and the kneading arm speed controller 15 is turned on, thereby adjusting the kneading speed and kneading time.

[0071] After turning on and adjusting the kneading arm speed controller, the kneading unit 13 begins to extend and retract. Specifically, two kneading units 13 on the same diameter line are grouped into three groups. Then, the two kneading units 13 in the same group push against each other 2-3 times. After this pushing and kneading motion, the three groups of kneading units 13 then work sequentially in either a clockwise or counterclockwise direction. Finally, after the set kneading time is reached, the process is stopped and the polyester film containing the resin anchoring agent is removed.

[0072] In this embodiment, the resin adhesive material is relatively viscous, and the resin anchoring agent has a short gel time after stirring. If a large-blade agitator is used, it is difficult to clean the resin anchoring agent adhering to the agitator later. A curved wire agitator cannot effectively mix the materials evenly. The kneading unit 13 in this embodiment simulates manual mixing and kneading. The film clamping end 136 at the end can clamp the inner polyester film, and the arc-shaped kneading head 137 is located outside the polyester film and has sufficient curvature to ensure that the resin anchoring agent material does not enter the arc-shaped kneading head 137, preventing difficulties in later cleaning. Furthermore, the arc-shaped kneading head 137 does not contact the resin anchoring agent material on the outside of the film, enabling quick and convenient kneading and mixing of the materials.

[0073] Meanwhile, both large-blade agitators and wire agitators have the problem of making it difficult to remove the resin anchoring agent material after mixing. However, the humanoid kneading unit 13 in this embodiment overcomes the problem of the resin anchoring agent's viscosity by simulating the kneading process in dough mixing. This allows for thorough mixing of viscous substances, and the material is flattened during the alternating sliding of the two arms, resulting in more uniform mixing. The curing agent is then spread into the resin putty, allowing for faster and more uniform mixing.

[0074] The kneading unit 13 allows for more uniform mixing of the resin anchoring agent before test block preparation. The three-group kneading unit 13 effectively controls the mixing degree between anchoring agent components, thereby reducing the dispersion of test data.

[0075] After the above operations are completed, the resin anchoring agent test blocks will be poured using the test block making component 2 and the test block covering component 3.

[0076] See Figures 4 to 7 The test block manufacturing component 2 includes a mold base plate 21, a test block mold 22, a test block forming part 23, a limiting post 24, a manual clamping unit 25, and a heating resistance wire 26.

[0077] The test block mold 22 is fixedly installed on the mold base plate 21. The test block mold 22 has a trapezoidal structure, and four test block molds 22 are connected end to end to form a square frame structure, which facilitates installation and adjustment.

[0078] The test block mold 22 has multiple turns of heating resistance wire 26 wound from top to bottom inside. The heating resistance wire 26 is insulated from the test block mold 22 and can be energized and heated during actual operation. This allows for the simulation of different temperature environments, which can accurately help study the mechanical properties of the resin anchoring agent under different ground temperature conditions. A negative pressure evacuation hole 221 is located in the middle of the heating resistance wire 26 in the test block mold 22 for evacuation operations.

[0079] The test block molding component 23 is installed inside the test block mold 22, and its interior has a cylindrical cavity. Multiple vertical negative pressure extraction slits 231, evenly arranged along its axial direction, are formed on the inner sidewall of the cavity of the test block molding component 23. Horizontal negative pressure extraction connection holes 232 are also formed, communicating with the negative pressure extraction slits 231. A negative pressure extraction channel 233 is provided on the rear inner wall 122 of the test block molding component 23, located at the negative pressure extraction slits 231, and communicates with the negative pressure extraction connection holes 232. After applying a layer of solid lubricating oil to the mold base plate 21 and the inner wall 122 of the test block molding component 23, a polyester film is placed inside the mold, including a circumferentially placed polyester film. The film is firmly adsorbed onto the inner wall 122 by a negative pressure device, thereby isolating the mold from the resin anchoring agent material being poured, facilitating subsequent cleaning.

[0080] Multiple limiting posts 24 are installed on the left and upper sides of the test block mold 22. The limiting posts 24 are all installed on the mold base plate 21 by threads at the bottom. At the same time, the height of the limiting posts 24 is adjusted according to the different sizes of the cast test specimens to correspond to the height of each test block.

[0081] Manual clamping units 25 are installed on both the right and lower sides of the test block mold 22. Each manual clamping unit 25 includes a clamping screw rod component 251, a clamping positioning pin 252, and a clamping pad 253. The clamping screw rod component 251 is fixedly mounted on the mold base plate via the clamping positioning pin 252 and is connected to the test block mold 22. The clamping pad 253 is installed between the test block mold 22 and the clamping screw rod component 251. During operation, rotating the clamping screw rod component 251 pushes the clamping pad 253 forward, thereby clamping the test block mold 22.

[0082] In this embodiment, the test block mold 22 is made of stainless steel and can be used in combination to realize uniaxial (triaxial) compression test (cylindrical specimen with a diameter of 50 mm and a height of 100 mm), Brazilian splitting test (testing the uniaxial tensile strength of the specimen) (cylindrical specimen with a diameter of 50 mm and a height of 30 mm), and 40×40×40 mm cube test block as specified in the standard.

[0083] See Figure 8 and Figure 9 The test block covering assembly 3 includes a presser connecting rod 31, a retractable airbag 32, a rotating connecting shaft 33, a presser vertical connecting rod 34, and a vertical connecting rod hook 35. The retractable airbag 32 is located in the middle of the presser connecting rod 31. The four ends of the presser connecting rod 31 are respectively connected to the presser vertical connecting rod 34 via the rotating connecting shaft 33, and the vertical connecting rod hook 35 is installed at the bottom of the presser vertical connecting rod 34. Four presser connecting buckles 211, corresponding to the vertical connecting rod hooks 35, are provided on the mold base plate 21. The test block covering assembly 3 can be fixed to the test block making assembly 2 through the cooperation of the presser connecting buckles 211 and the vertical connecting rod hooks 35.

[0084] The specific casting process is as follows: The test block mold 22 is installed on the mold base plate 21, and the test block forming part 23 is placed inside the test block mold 22. The test block mold 22 is clamped by the manual clamping units 25 on the right and lower sides. After applying a layer of solid lubricating oil to the mold base plate 21 and the inner wall 122, a polyester film is placed inside the mold, including a circumferential polyester film. The film is firmly adsorbed onto the inner wall 122 by a negative pressure device. After the mixed resin anchoring agent material is placed into the mold, the vertical connecting rod hook 35 is connected to the pressure lowering device connecting buckle 211. At this time, the retractable airbag 32 is in a shortened state. The vertical connecting rod hook 35 on the other side is also connected to the pressure lowering device connecting buckle 211. After the test block covering assembly 3 at the upper end is installed, the airbag pressurization equipment is activated. The pressure upper limit is used to control the downward pressure of the test block in the test block making assembly 2, thereby uniformly controlling the downward pressure and ensuring that the density of the test blocks is basically consistent.

[0085] This embodiment, through the aforementioned simple compaction device, can more precisely control the degree of compaction compared to the conventional method of compaction by hammering a cover plate. Different hammering methods or different numbers of hammering result in varying external forces on the resin anchoring agent mixture, leading to differences in density. Therefore, it reduces the dispersion of test data at its source.

[0086] This invention also discloses a method for manufacturing a refined resin anchoring agent test block preparation device, comprising the following steps:

[0087] S1. Place the polyester film that matches the test block material kneading assembly 1 at the bottom and inner wall 122 of the mixing tank, turn on the negative pressure vacuum motor 14, and adsorb the polyester film onto the inner wall 122 of the hollow mixing tank 12.

[0088] S2. Shrink all the kneading units 13, place another polyester film in the test block material kneading assembly 1, and clamp the four ends of the polyester film through the film clamping end 136 of the kneading unit 13. Place the weighed raw materials in the center of the polyester film in sequence, turn on the power supply, connect the power supply, and adjust the kneading speed and kneading time through the kneading arm speed controller 15.

[0089] S3. After turning on the kneading arm speed controller 15, ensure that the kneading units 13 on the diameter line of the six kneading units 13 are paired up. During operation, the two kneading units 13 push each other. After the two kneading units 13 on one diameter line push each other 2-3 times, the other groups of kneading units 13 are controlled to work in a clockwise or counterclockwise direction. When the stirring time is reached, stop the kneading unit 13 and take out the polyester film containing the resin anchoring agent.

[0090] S4. Casting of resin anchoring agent test blocks: After arranging the upper outer wall 121 of the test block molding component, place the test block molding component 23 inside the test block mold 22 to form different test block production spaces inside. Connect the manual clamping unit 25 to the mold base plate 21 through the clamping positioning pin 252. By rotating the manual clamping unit 25 on the right and lower sides of the mold base plate 21, the clamping pad 253 is pushed inward to clamp the test block mold 22.

[0091] S5. After the test block making component 2 is assembled, the polyester film is adsorbed onto the inner wall 122 by a negative pressure device, and the stirred resin anchoring agent material is placed on the polyester film of the test block making component 2.

[0092] S6. After placing the mixed resin anchoring agent material into the test block making component 2, connect the vertical connecting rod hooks 35 of the test block covering component 3 on both sides of the test block making component 2 to the pressure connector 211 of the test block making component 2. At this time, keep the retractable airbag 32 in the shortened state. After the test block negative pressure component is installed, activate the retractable airbag 32. The retractable airbag 32 controls the pressure height of the test block to press the test block tightly.

[0093] Specifically, this manufacturing method involves preparing the resin anchoring agent through two separate processes: mixing and casting.

[0094] First, proceed with the resin anchoring agent mixing step:

[0095] A polyester film matching the test block material kneading assembly 1 is placed at the bottom and inner wall 122 of the mixing tank. The negative pressure exhaust motor 14 is turned on. The entire mixing space is protected by the polyester film, so that it will not be difficult to clean later due to the solidification of the resin anchoring agent.

[0096] Shrink all the kneading units 13, place another polyester film in the test block material kneading assembly 1, and clamp the four ends of the polyester film through the film clamping end 136 of the kneading unit 13. Place the weighed raw materials in the center of the polyester film in sequence, turn on the power supply, connect the power supply, and adjust the kneading speed and kneading time through the kneading arm speed controller 15.

[0097] After turning on the kneading arm speed controller 15, ensure that the kneading units 13 on the diameter line of the six kneading units 13 are paired up. During operation, the two kneading units 13 push each other. After the two kneading units 13 on one diameter line push each other 2-3 times, the other groups of kneading units 13 are controlled to work in a clockwise or counterclockwise direction. When the stirring time is reached, stop the kneading unit 13 and remove the polyester film containing the resin anchoring agent.

[0098] Then, the resin anchoring agent test blocks were poured:

[0099] The entire test block manufacturing assembly 2 is made of stainless steel. The limiting post 24 is connected to the mold base plate 21 through the bottom thread. For different casting specimens, the height of the limiting post 24 is adjusted to correspond to the different heights of each test block. Four test block molds 22 are also provided at the upper end of the mold base plate 21. Each test block mold 22 is provided with multiple turns of heating resistance wire 26. The heating resistance wire 26 is insulated from the test block mold 22 to ensure that it can be heated simultaneously when the test block mold 22 is working, simulating different temperature environments.

[0100] After the test block mold 22 on the upper part of the mold base plate 21 is installed, the test block forming part 23 is placed inside the test block mold 22 to form different test block production spaces inside. The manual clamping unit 25 is connected to the mold base plate 21 through the clamping positioning pin 252. By rotating the manual clamping unit 25 on the right and lower sides of the mold base plate 21, the clamping pad 253 is pushed inward to clamp the test block mold 22.

[0101] The inner wall 122 of the test block mold 23 has a negative pressure extraction slit 231, which is collected through the internal negative pressure extraction channel to the negative pressure extraction connection hole. This hole is connected to the external negative pressure motor through the negative pressure extraction hole 123. After the test block mold 22 is installed, a layer of solid lubricating oil is applied between the mold base plate 21 and the inner wall 122, and then a polyester film is placed inside the test block mold 22. Polyester film is also placed circumferentially. The negative pressure device firmly adsorbs the film onto the inner wall 122 of the test block mold 22, thereby isolating the test block mold 22 from the resin anchoring agent material to be poured, which facilitates subsequent cleaning.

[0102] After the mixed resin anchoring agent material is placed into the test block making component 2, the vertical connecting rod hooks 35 of the test block covering component 3 on both sides of the test block making component 2 are connected to the pressure connector buckle 211 of the test block making component 2. At this time, the retractable airbag 32 is kept in the shortened state. After the test block negative pressure component is installed, the retractable airbag 32 is activated. The retractable airbag 32 controls the downward pressure height of the test block to press the test block tightly.

[0103] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0104] The above embodiments are merely examples of implementation methods of the invention. The scope of protection of the present invention is not limited to the above embodiments. For those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A device for preparing refined resin anchoring agent test blocks, characterized in that: It includes a test block material kneading component (1), a test block making component (2), and a test block covering component (3); The test block material kneading assembly (1) includes a hollow mixing cylinder (12) and a kneading unit (13). The kneading unit (13) is installed inside the hollow mixing cylinder (12) and the kneading unit (13) is retractable. The test block covering assembly (3) is installed on the upper end of the test block making assembly (2); The kneading unit (13) includes a fixed support (131), a kneading rear arm (132), a kneading forearm (133), a first fixed rotating shaft (134), a second fixed rotating shaft (135), a film clamping end (136), an arc-shaped kneading head (137), and a fixed spring assembly (138). The fixed support (131) is fixedly installed on the side wall of the hollow mixing tank (12). One end of the kneading rear arm (132) is rotatably installed on the fixed support (131) through the first fixed rotating shaft (134). The other end of the kneading rear arm (132) is rotatably installed on one end of the kneading front arm (133) through the second fixed rotating shaft (135). The other end of the kneading front arm (133) is rotatably installed with a film clamping end (136). The arc-shaped kneading head (137) is a semi-circular rod-shaped structure. One end of the arc-shaped kneading head (137) is connected to the side of the kneading forearm (133) away from the kneading rear arm (132), and the arc-shaped kneading head is located at the lower end of the kneading forearm (133). The fixed spring assembly (138) has multiple springs and is installed between the kneading forearm (133) and the arc-shaped kneading head (137).

2. The resin anchor specimen fine-tuning apparatus according to claim 1, characterized by: The test block material kneading assembly also includes a kneading shell (11), a negative pressure air extraction motor (14), a kneading arm speed controller (15), a power plug, and a polyester film; The hollow mixing cylinder (12) is installed inside the kneading shell (11); the polyester film is attached to the inner wall and bottom of the hollow mixing cylinder (12); the negative pressure suction motor (14), the kneading arm speed controller (15) and the power plug are all installed on the kneading shell (11); The hollow mixing tank (12) has multiple negative pressure suction holes (123) on its side wall; the negative pressure suction holes (123) are connected to the negative pressure suction motor (14); The kneading arm speed controller (15) is connected to the kneading unit (13).

3. The resin anchor specimen fine-tuning apparatus according to claim 1, characterized by: The hollow mixing cylinder (12) includes an outer wall (121) and an inner wall (122), with the outer wall (121) fitted over the inner wall (122).

4. The equipment for preparing refined resin anchoring agent test blocks according to claim 1, characterized in that: The kneading unit (13) is provided in six parts, and the six kneading units (13) are symmetrically and evenly arranged on the side wall of the hollow mixing tank (12).

5. The resin anchor specimen fine-tuning apparatus according to claim 1, characterized by: The test block manufacturing assembly (2) includes a mold base plate (21), a test block mold (22), a test block forming part (23), a limiting post (24), a manual clamping unit (25), and a heating resistance wire (26). The test block mold (22) is fixedly installed on the mold base plate (21); the interior of the test block mold (22) is provided with multiple turns of heating resistance wire (26) wound from top to bottom, the heating resistance wire (26) is insulated from the test block mold (22), and the test block mold (22) is provided with a negative pressure suction hole (221) at the middle of the heating resistance wire (26). The test block molding component (23) is installed inside the test block mold (22). Multiple limiting posts (24) are installed on the left and upper sides of the test block mold (22); manual clamping units (25) are installed on the right and lower sides of the test block mold (22).

6. The resin anchor specimen fine-tuning apparatus according to claim 5, characterized by: The manual clamping unit (25) includes a clamping screw rod component (251), a clamping positioning pin (252), and a clamping pad (253). The clamping screw rod component (251) is fixedly installed on the mold pad by the clamping positioning pin (252) and connected to the test block mold (22). The clamping pad (253) is installed between the test block mold (22) and the clamping screw rod component (251).

7. The resin anchor specimen fine-tuning apparatus according to claim 5, characterized by: The test block covering assembly (3) includes a presser connecting rod (31), a retractable airbag (32), a rotating connecting shaft (33), a presser vertical connecting rod (34), and a vertical connecting rod hook (35). A retractable airbag (32) is provided in the middle of the presser connecting rod (31); the four ends of the presser connecting rod (31) are respectively equipped with presser vertical connecting rods (34) through rotating connecting shafts (33), and the vertical connecting rod hooks (35) are installed at the bottom of the presser vertical connecting rods (34); The mold base plate (21) is provided with four presser connecting buckles (211), and the presser connecting buckles (211) and the vertical connecting rod hooks (35) can cooperate.

8. A method of using the fine resin anchor block manufacturing apparatus according to any one of claims 1 to 7, characterized by: Includes the following steps: S1. Place the polyester film that matches the test block material kneading assembly (1) at the bottom and inner wall (122) of the mixing tank, turn on the negative pressure vacuum motor (14), and adsorb the polyester film onto the inner wall (122) of the hollow mixing tank (12). S2. Shrink all the kneading units (13), take another polyester film and place it in the test block material kneading assembly (1), and clamp the four ends of the polyester film through the film clamping end (136) of the kneading unit (13). Place the weighed raw materials in the center of the polyester film, turn on the power supply, connect the power supply, and adjust the kneading speed and kneading time through the kneading arm speed controller (15). S3. After turning on the kneading arm speed controller (15), ensure that the kneading units (13) on the diameter line of the six kneading units (13) are in pairs. During operation, the two kneading units (13) push each other. After the two kneading units (13) on a diameter line push each other 2-3 times, the other groups of kneading units (13) are controlled to work in a clockwise or counterclockwise direction. When the stirring time is reached, stop the kneading unit (13) and take out the polyester film containing the resin anchoring agent. S4. Casting of resin anchoring agent test blocks: After arranging the upper outer wall (121) of the test block molding component, place the test block molding component (23) inside the test block mold (22) to form different test block production spaces inside. Connect the manual clamping unit (25) to the mold base plate (21) through the clamping positioning pin (252). By rotating the manual clamping unit (25) on the right and lower sides of the mold base plate (21), the clamping pad (253) is pushed inward to clamp the test block mold (22). S5. After the test block making component (2) is assembled, the polyester film is adsorbed onto the inner wall (122) by the negative pressure device, and the stirred resin anchoring agent material is placed on the polyester film of the test block making component (2). S6. After the mixed resin anchoring agent material is placed into the test block making component (2), the vertical connecting rod hooks (35) of the test block covering component (3) on both sides of the test block making component (2) are connected to the pressure connector (211) of the test block making component (2). At this time, the retractable airbag (32) is kept in a shortened state. After the test block negative pressure component is installed, the retractable airbag (32) is activated. The retractable airbag (32) controls the pressure height of the test block to press the test block.

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