A device for testing the bending resistance of chrome bricks
By designing an adjustable-distance slide rail and sleeve structure, the problem that existing devices cannot adapt to testing chrome bricks of different lengths has been solved, simplifying the operation process and improving testing accuracy and device lifespan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN YINHE KECHENG ENVIRONMENTAL PROTECTION CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-06-12
AI Technical Summary
Existing chrome brick flexural strength testing devices cannot adapt to testing chrome bricks of different lengths, and debris is difficult to clean during the testing process, affecting the lifespan of the device and testing efficiency.
A device for testing the bending strength of chrome bricks was designed. It adopts an adjustable sliding rail structure and a sleeve protection device to ensure that the short axis of the chrome brick coincides with the loading line of the pressure head, and the debris is collected in the sleeve for easy cleaning.
It enables adaptability testing of chrome bricks of different lengths, simplifies the operation process, and improves testing accuracy and the service life of the equipment.
Smart Images
Figure CN224354243U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of chrome brick performance testing equipment, and in particular relates to a chrome brick flexural strength testing device. Background Technology
[0002] Chrome bricks are formed by pressing after being treated to be harmless, dehydrated, dried, mixed with ingredients, and then pressed.
[0003] To evaluate the mechanical properties of chromium slag, the flexural strength of chromium bricks is usually tested using the three-point bending test to quantify their ability to resist bending deformation and fracture, ensuring structural integrity in practical applications.
[0004] The existing testing device has a fixed distance between the two support points, which cannot accommodate testing chrome bricks of different lengths. To address this, the existing device has been improved by adding a slide rail on the operating table to adjust the distance between the two support points, allowing the two support points to move along the slide rail.
[0005] However, the following problems still exist: First, during the test, in order to ensure that the two ends of the chrome brick are consistent with the distance between the two, it is necessary to use a measuring tool to measure and ensure that the short axis of the chrome brick corresponds to the bottom of the loading head, which is inefficient; Second, after the test, the broken chrome brick fragments and broken chrome bricks fall directly onto the slide rail, which is difficult to clean and affects the service life of the slide rail. Utility Model Content
[0006] To address the shortcomings of the existing technology, this utility model provides a chrome brick bending strength testing device that can adapt to testing chrome bricks of different lengths while preventing debris and broken chrome slag generated during testing from falling directly into the rectangular platform, making cleaning convenient and operation simple.
[0007] In order to achieve the purpose of this utility model, the following solution is proposed:
[0008] A device for testing the flexural strength of chrome bricks includes an operating table. Support columns are vertically positioned at the center of both sides of the top surface of the operating table. A top plate is mounted on the upper end of the two support columns. A pressure head is telescopically mounted on the bottom surface of the top plate. A rectangular platform is mounted on the operating table. An inverted T-shaped groove is located in the center of the rectangular platform. A bidirectional lead screw is mounted within the inverted T-shaped groove. One end of the bidirectional lead screw extends beyond one end of the rectangular platform and is equipped with a rotating handle. A first movable seat and a second movable seat are respectively mounted on two threaded sections with opposite directions on the bidirectional lead screw. An outer sleeve plate and an inner sleeve plate are respectively mounted on opposite sides of the first and second movable seats. Both the outer sleeve plate and the inner sleeve plate are located on the top surface of the rectangular platform. One end of the inner sleeve plate is slidably connected to the inner walls of both sides of the outer sleeve plate. A protective cover is rotatably mounted on one side of the operating table.
[0009] Furthermore, the pressure head has a circular cross-section, and a hydraulic telescopic rod is vertically installed in the middle of the bottom surface of the top plate. The lower end of the hydraulic telescopic rod is provided with an inverted U-shaped seat, and the two ends of the pressure head are rotatably connected to the two side arms of the inverted U-shaped seat.
[0010] Furthermore, the outer sleeve plate has protruding edges on both sides, and a T-pin is provided at one end of the protruding edge. A roller is fitted on the vertical part of the T-pin. The inner sleeve plate has strip edges on both sides, and a strip groove is provided on the outer side of the strip edge. The roller is tumblingly connected to the strip groove.
[0011] Furthermore, the top surfaces of the first and second movable seats are respectively provided with arc-shaped rods.
[0012] Furthermore, the top surface of the first movable seat is provided with a surrounding plate, one side of which has a notch, and the arc-shaped rod on the first movable seat is located in the notch.
[0013] Furthermore, the protective cover has a horizontally arranged U-shaped cross-section, with the upper and lower ends of one of its support arms rotatably connected to the top plate and the operating table, respectively.
[0014] The beneficial effects of this utility model are as follows:
[0015] An outer sleeve plate and an inner sleeve plate are respectively provided on the opposite side of the first and second movable seats, so that the broken chrome brick and debris can directly enter the outer sleeve plate and the inner sleeve plate. This not only facilitates cleaning, but also protects the bidirectional lead screw used to adjust the distance between the first and second movable seats. A surrounding plate with an opening facing the second movable seat is provided at the top of the first movable seat. When in use, one end of the chrome brick abuts against the horizontal part of the surrounding plate, which can ensure that the short axis of the chrome brick coincides with the loading line of the pressure head, making the operation simple. Attached Figure Description
[0016] The accompanying drawings described herein are merely illustrative of selected embodiments, not all possible implementations, and are not intended to limit the scope of this invention.
[0017] Figure 1 A schematic diagram of the external structure of the protective cover of this application when it is closed is shown.
[0018] Figure 2 A three-dimensional schematic diagram of one side of the chrome brick of this application placed on the first and second movable seats is shown.
[0019] Figure 3 A three-dimensional schematic diagram of the other side of the chrome brick of this application placed on the first and second movable seats is shown.
[0020] Figure 4 A schematic diagram of the rectangular platform and lead screw mounting structure of this application is shown.
[0021] Figure 5A three-dimensional structural schematic diagram of the first and second movable seats of this application is shown.
[0022] Figure 6 A cross-sectional view along the width direction of the outer and inner sleeve plates of this application is shown.
[0023] Figure 7 This application shows Figure 6 A magnified view of part A in the diagram.
[0024] The markings in the diagram are: operating table-1, rectangular table-11, T-slot-12, double-acting screw-13, handle-131, first moving seat-14, outer sleeve plate-141, protruding edge-142, T-pin-143, roller-144, arc-shaped rod-145, surrounding plate-146, second moving seat-15, inner sleeve plate-151, strip edge-152, strip groove-153, protective cover-16, support column-2, top plate-3, hydraulic telescopic rod-31, inverted U-shaped seat-32, pressure head-4. Detailed Implementation
[0025] To make the objectives, technical solutions and advantages of the present utility model clearer, the implementation methods of the present utility model will be described in detail below with reference to the accompanying drawings. However, the embodiments described in the present utility model are only some embodiments of the present utility model, and not all embodiments.
[0026] like Figures 1-7 As shown, this embodiment provides a chrome brick bending strength testing device, including an operating table 1, a support column 2, a top plate 3, and a pressure head 4.
[0027] Specifically, such as Figures 1-3 As shown, the operating table 1 is set horizontally and its bottom is fixed on a frame. A set of support columns 2 are provided and are set vertically along the middle of both sides of the top surface of the operating table 1. The top plate 3 is installed on the upper end of the set of support columns 2, and the center of gravity of the top plate 3 overlaps with the projection of the center of gravity of the operating table 1 on the horizontal plane. The pressure head 4 is vertically extended and retracted at the center of gravity of the bottom surface of the top plate 3.
[0028] Specifically, such as Figures 2-5 As shown, the operating table 1 is provided with a rectangular platform 11, a two-way lead screw 13, a first moving seat 14, a second moving seat 15, and a protective cover 16. The length direction of the rectangular platform 11 is consistent with the length direction of the operating table 1. An inverted T-shaped groove 12 is provided along the length direction of the rectangular platform 11. The horizontal part of the inverted T-shaped groove 12 is connected to the top surface of the rectangular platform 11, and the lower end of the vertical part of the inverted T-shaped groove 12 is connected to the bottom surface of the rectangular platform 11.
[0029] The two ends of the bidirectional lead screw 13 are rotatably connected to the two ends of the inverted T-groove 12, respectively. One end of the bidirectional lead screw 13 passes through one end of the inverted T-groove 12 and is provided with a rotating handle 131. The rotating handle 131 is provided with insertion holes in a circumferential array. On one end of the operating table 1, corresponding to the surface where the rotating handle 131 is located, there is a screw hole corresponding to the insertion hole. A locking screw is provided in the insertion hole and threadedly connected to the screw hole to lock the circumferential movement of the rotating handle 131. The first moving seat 14 and the second moving seat 15 are respectively provided in the inverted T-groove 12 and are respectively connected to the bidirectional lead screw 13. The threaded section on rod 13 is threaded. Rotating handle 131 drives the bidirectional lead screw 13 to rotate, thereby synchronously adjusting the distance between the first moving seat 14 and the second moving seat 15 and the short axis of the bidirectional lead screw 13. This is used to adapt to the bending strength test of chrome bricks of different lengths. After the distance between the opposite sides of the first moving seat 14 and the second moving seat 15 is determined, the locking screw is inserted into the insertion hole and threaded into the threaded hole, thereby preventing the screw 13 from rotating and causing the first moving seat 14 and the second moving seat 15 to move.
[0030] Specifically, such as Figure 3 As shown, the first movable seat 14 is located at the end of the bidirectional lead screw 13 away from the handle 131, and the second movable seat 15 is located at the end of the bidirectional lead screw 13 near the handle 131.
[0031] like Figures 5-7 As shown, the first movable seat 14 has an outer sleeve plate 141 vertically mounted on the side facing the second movable seat 15. The bottom surface of the outer sleeve plate 141 slides in contact with the top surface of the rectangular platform 11. The two sides of the outer sleeve plate 141 are respectively provided with vertically upward protruding edges 142. T-shaped pins 143 are symmetrically mounted on the inner side of the two protruding edges 142. A roller 144 is rotatably mounted on the vertical part of the T-shaped pin 143. The inner diameter of the roller 144 is adapted to the outer diameter of the vertical part of the T-shaped pin 143. The outer diameter of the roller 144 is larger than the outer diameter of the horizontal part of the T-shaped pin 143.
[0032] The second movable seat 15 has an inner sleeve plate 151 vertically arranged on the side facing the first movable seat 14. The width of the inner sleeve plate 151 is adapted to the size between the inner sides of the protruding edges 142 on both sides of the outer sleeve plate 141. The inner sleeve plate 151 has vertically upward protruding strip edges 152 on both sides. The outer side of the strip edges 152 has a strip groove 153. The strip groove 153 is arranged along the length direction of the inner sleeve plate 151. The width of the strip groove 153 is adapted to the outer diameter of the roller 144 so that the roller 144 rolls in the corresponding strip groove 153.
[0033] When the handle 131 is turned, the double-acting screw 13 rotates, thereby adjusting the distance between the first moving seat 14 and the second moving seat 15, so that the outer sleeve plate 141 and the inner sleeve plate 151 move closer or further apart, in order to catch the chrome bricks that fall after the chrome brick bending strength test, so as to avoid damaging the workbench, or the debris generated during the bending process falling into the inverted T-groove 12, which would make cleaning difficult.
[0034] Specifically, such as Figure 5 As shown, a U-shaped enclosure 146 is provided at the top of the first movable seat 14. The opening of the enclosure 146 faces the second movable seat 15. The top of the second movable seat 15 is provided with a notch, which corresponds to the opening. During testing, one end of the chrome brick is inserted along the opening of the enclosure 146 and abuts against the horizontal part of the U-shaped enclosure 146 to limit one end of the chrome brick. The other end of the chrome brick is inserted into the notch to ensure that the short axis of the chrome brick is directly below the pressure head 4 during testing, thereby improving the accuracy of the test.
[0035] The top surface of the first movable seat 14 is provided with an arc-shaped rod 145 perpendicular to the moving direction of the first movable seat 14. The two ends of the arc-shaped rod 145 are respectively located between the two side arms of the surrounding plate 146. The top notch of the second movable seat 15 is provided with an arc-shaped rod 145 with the same structure as the top surface of the first movable seat 14. The two ends of the arc-shaped rod 145 corresponding to the second movable seat 15 abut against the inner walls of the notch.
[0036] Specifically, such as Figure 3 , Figure 5 As shown, a vertically downward hydraulic telescopic rod 31 is provided in the middle of the bottom surface of the top plate 3. The output end of the hydraulic telescopic rod 31 is vertically downward. Below the output end of the hydraulic telescopic rod 31, there is an inverted U-shaped seat 32. The center of the horizontal part of the inverted U-shaped seat 32 is connected to the output end of the hydraulic telescopic rod 31. The two side arms of the inverted U-shaped seat 32 are vertically downward. The pressure head 4 has a cylindrical structure. The two ends of the pressure head 4 are respectively rotatably connected between the lower ends of the two side arms of the inverted U-shaped seat 32.
[0037] During testing, the two ends of the chrome brick placed on the bottom surface are supported by the arc-shaped rod 145 on the top surface of the first moving seat 14 and the arc-shaped rod 145 on the top surface of the second moving seat 15, respectively. This changes the surface contact of the two ends of the bottom surface of the chrome brick from surface contact to line contact, thereby reducing the contact area between the chrome brick and the top surface of the first moving seat 14 and the top surface of the second moving seat 15. A line contact is also formed between the short axis of the top surface of the chrome brick and the cylindrical pressure head 4, thus making the bending test results more accurate.
[0038] like Figures 1-3As shown, the protective cover 16 has a horizontally arranged U-shaped structure. The upper and lower ends of one of its support arms are rotatably connected to the top plate 3 and the operating table 1, respectively. When a bending test is performed, the protective cover 16 is rotated so that the other support arm of the protective cover 16 rotates to the other side of the top plate 3 and the operating table 1, thereby preventing chrome brick fragments from flying out during the bending test and protecting the safety of the operator.
[0039] Specific operating procedures:
[0040] According to the length of the chrome brick to be tested, rotate the handle 131 to adjust the distance between the first moving seat 14 and the second moving seat 15. After the distance is adjusted, put one end of the chrome brick into the surrounding plate 146 and make the end of the chrome brick facing the surrounding plate 146 abut against the horizontal part of the surrounding plate 146 to ensure that the short axis of the chrome brick corresponds to the bottom of the pressure head 4. In order to prevent the broken chrome brick from falling onto the inner sleeve plate 151 and causing the inner sleeve plate 151 to bend and deform, insert a steel pad into the bottom surface of the inner sleeve plate 151. The thickness of the pad is the same as the thickness of the outer sleeve plate 141.
[0041] Then rotate the protective cover 16 so that the device appears as follows. Figure 1 In the state shown, activate the hydraulic telescopic rod 31 to move it vertically downwards, thereby pushing the pressure head 4 to act on the chrome brick and slowly apply pressure until the chrome brick breaks. Record the pressure applied by the hydraulic telescopic rod 31 at the time of breakage to complete the test.
[0042] The above description is merely a preferred embodiment of this utility model and does not imply its uniqueness or limitation. Those skilled in the art should understand that various changes or equivalent substitutions made to this utility model without departing from its scope are all within the protection scope of this utility model.
Claims
1. A device for testing the bending strength of chrome bricks, comprising an operating table (1), wherein support columns (2) are vertically arranged in the middle of both sides of the top surface of the operating table (1), and the upper ends of the two support columns (2) are provided with the same top plate (3), and the bottom surface of the top plate (3) is provided with a pressure head (4) that can be extended or retracted, characterized in that, The operating table (1) is provided with a rectangular platform (11), and an inverted T-shaped groove (12) is provided in the middle of the rectangular platform (11). A two-way screw (13) is provided in the inverted T-shaped groove (12). One end of the two-way screw (13) extends out of one end of the rectangular platform (11) and is provided with a handle (131). The two threaded sections with opposite directions on the two-way screw (13) are respectively provided with a first moving seat (14) and a second moving seat (15). The opposite sides of the first moving seat (14) and the second moving seat (15) are respectively provided with an outer sleeve plate (141) and an inner sleeve plate (151). The outer sleeve plate (141) and the inner sleeve plate (151) are both located on the top surface of the rectangular platform (11). One end of the inner sleeve plate (151) is slidably connected to the inner walls of both sides of the outer sleeve plate (141). A protective cover (16) is provided on one side of the operating table (1).
2. The flexural strength testing device for chrome bricks according to claim 1, characterized in that, The cross-section of the pressure head (4) is circular. A hydraulic telescopic rod (31) is vertically installed in the middle of the bottom surface of the top plate (3). An inverted U-shaped seat (32) is installed at the lower end of the hydraulic telescopic rod (31). The two ends of the pressure head (4) are rotatably connected to the two side arms of the inverted U-shaped seat (32).
3. The flexural strength testing device for chrome bricks according to claim 1, characterized in that, The outer sleeve plate (141) has protruding edges (142) on both sides, and a T-pin (143) is provided at one end of the protruding edge (142). A roller (144) is fitted on the vertical part of the T-pin (143). The inner sleeve plate (151) has strip edges (152) on both sides, and a strip groove (153) is provided on the outer side of the strip edge (152). The roller (144) is tumblingly connected to the strip groove (153).
4. The flexural strength testing device for chrome bricks according to claim 1, characterized in that, The top surfaces of the first movable seat (14) and the second movable seat (15) are respectively provided with arc-shaped rods (145).
5. The flexural strength testing device for chrome bricks according to claim 4, characterized in that, The top surface of the first movable seat (14) is provided with a surrounding plate (146), one side of the surrounding plate (146) is provided with a notch, and the arc rod (145) on the first movable seat (14) is located in the notch.
6. The flexural strength testing device for chrome bricks according to claim 1, characterized in that, The protective cover (16) has a horizontally arranged U-shaped cross-section, and the upper and lower ends of one of its support arms are rotatably connected to the top plate (3) and the operating table (1) respectively.