A hand demolding auxiliary device for concrete compressive strength test block

Abstract

A kind of concrete compressive strength test block hand demoulding auxiliary device, including frame, frame includes rectangular frame and the column fixedly connected in the four corners below rectangular frame, the column between the left and right sides of frame and back is fixedly installed with anti-collision plate, two columns between the front of frame are equipped with anti-collision door;The lower end of four columns is fixedly connected with the upper surface of bottom plate, the upper surface of the bottom plate of four columns is slidably connected with buffer plate, buffer pad is equipped on the upper surface of buffer plate, the four corners of rectangular frame are also fixedly connected with locating angle steel, the lower end of locating angle steel extends to column and is fixedly connected with it.This device when carrying out concrete test block demoulding, concrete test mould is inverted on shock pad, and concrete test block is demoulded by hammering or air pressure through the hole in the bottom of concrete test mould, and the concrete test block that falls will only fall on buffer pad due to the constraint of anti-collision plate and anti-collision door, guarantee the safety of operator at the same time, provide powerful guarantee for the precision of test.

Description

Technical Field

[0001] This invention relates to the field of civil engineering material testing equipment technology, and in particular to a manual demolding auxiliary device for concrete compressive strength test blocks. Background Technology

[0002] Concrete test blocks are important tools for testing the performance and quality of concrete. Concrete compressive strength is a core indicator for evaluating the quality of engineering projects such as water conservancy, roads, and railways, and the accuracy of its test results directly affects the safety and durability of the engineering structure. Concrete test blocks can be used for concrete strength testing to verify whether the concrete meets design requirements, and can also be used for quality control to monitor and control the quality of concrete. After the concrete test blocks are formed, they need to be demolded. Current demolding methods generally involve placing the mold upside down on a demolding aid, striking the mold, and demolding through vibration. However, this method can easily cause the test block to suddenly fall through the gaps in the demolding aid, potentially injuring operators, and the edges and corners of the test block are prone to breakage. Summary of the Invention

[0003] To address the above technical problems, this invention provides a manual demolding aid for concrete compressive strength test blocks, comprising a frame, the frame including a rectangular frame and columns fixedly connected to the four corners below the rectangular frame, anti-collision plates fixedly installed between the columns on the left and right sides and the back of the frame, and an anti-collision door provided between the two columns on the front of the frame; the lower ends of the four columns are fixedly connected to the upper surface of the base plate, and a buffer plate is slidably connected to the upper surface of the base plate of the four columns, the upper surface of the buffer plate is provided with a buffer pad, and positioning angle steel is also fixedly connected to the four corners of the rectangular frame, the lower end of the positioning angle steel extending to the column and fixedly connected thereto.

[0004] Furthermore, the cubic cavity formed by the rectangular frame, the column, and the upper surface of the base plate, together with the anti-collision plate and the anti-collision door, allows the concrete test block to fall vertically onto the buffer pad.

[0005] Furthermore, the edge width and inner opening size of the rectangular frame are matched with the edge width and inner opening size of the concrete test mold, and the upper surface of the rectangular frame is also provided with a matching shock-absorbing pad.

[0006] Furthermore, the upper surface of the base plate, located within the four columns, has two parallel trapezoidal grooves. The lower surface of the buffer plate, corresponding to the trapezoidal grooves, is fixedly connected to a trapezoidal slider, which engages with the trapezoidal grooves.

[0007] Furthermore, a handle is provided on the front side of the buffer plate near the crash door.

[0008] Furthermore, the panels of the crash barrier and the crash door are made of steel plates, and a layer of polyurethane foam board is bonded to the inside of the panels.

[0009] Furthermore, the left side of the crash barrier is connected to the left column via a hinge, and a buckle is installed on the right side of the crash barrier panel, which is movably engaged with a limiting plate installed on the right column.

[0010] Furthermore, the base plate is made of steel plate, and positioning holes are provided at all four corners.

[0011] The advantages and beneficial effects of this invention are as follows: When demolding concrete test blocks, this device inverts the concrete mold onto a shock-absorbing pad. The concrete test block is then demolded by hammering or air pressure through holes at the bottom of the mold. Due to the restraint of the anti-collision plate and anti-collision door, the falling concrete test block will only fall onto the buffer pad and will not fall out and injure the operator. At the same time, the test block will not be damaged by impact, ensuring the safety of the operator. The intact test block also provides a strong guarantee for the accuracy of the test. Attached Figure Description

[0012] Figure 1 This is a perspective view of the present invention; Figure 2 This is the front view of the present invention; Figure 3 This is a rear view of the present invention; Figure 4 This is a top view of the present invention; Figure 5 For the present invention Figure 1 Enlarged view of point A; Figure 6 A three-dimensional schematic diagram of the invention showing the opening of the anti-collision door; Figure 7 For the present invention Figure 6 A 3D diagram showing the removal of the buffer plate and buffer pad; Figure 8 This is a three-dimensional bottom view of the buffer plate and buffer pad of the present invention; In the diagram, 1. Frame; 11. Rectangular frame; 12. Column; 121. Limiting plate; 13. Anti-collision plate; 14. Anti-collision door; 141. Buckle; 15. Shock-absorbing pad; 2. Base plate; 21. Trapezoidal groove; 22. Positioning hole; 3. Buffer plate; 31. Trapezoidal slider; 32. Handle; 4. Buffer pad; 5. Positioning angle steel. Detailed Implementation

[0013] Example 1, as Figure 1-8As shown, a manual demolding aid for concrete compressive strength test blocks includes a frame 1. The frame 1 includes a rectangular frame 11 and four columns 12 fixedly connected to the lower corners of the rectangular frame 11. Anti-collision plates 13 are fixedly installed between the columns 12 on the left, right, and back sides of the frame 1. An anti-collision door 14 is provided between the two columns on the front of the frame 1. The lower ends of the four columns 12 are fixedly connected to the upper surface of the base plate 2. A buffer plate 3 is slidably connected to the upper surface of the base plate 2 located on the four columns 12. A buffer pad 4, which is a polyurethane foam board, is provided on the upper surface of the buffer plate 3, which is made of steel plate, by adhesive bonding. During demolding, the concrete test block falls onto the buffer pad 3. The pad 4 will not break during impact. The four corners of the rectangular frame 11 are also fixedly connected with positioning angle steel 5. The lower end of the positioning angle steel 5 extends to the column 12 and is fixedly connected to it. The positioning angle steel 5 can effectively prevent the concrete test mold placed on the rectangular frame 11 from shifting or falling off the rectangular frame 11 when under force, thus preventing safety hazards. In the above embodiment, the rectangular frame 11 and the column 12 can be made of square steel pipe. Therefore, the frame 1 can be assembled by welding. The base plate 2 is made of steel plate. The column 12 is connected to the base plate 2 by welding. The upper end of the anti-collision plate 13 has a gap of 3-5cm from the rectangular frame 11. When moving the device, the crossbeam of the rectangular frame 11 can be held for moving.

[0014] In this embodiment, the cubic cavity formed by the rectangular frame 11, the column 12, and the upper surface of the base plate 2, together with the blocking of the anti-collision plate 13 and the anti-collision door 14, allows the concrete test block to fall vertically onto the buffer pad 4.

[0015] In this embodiment, the edge width and inner opening size of the rectangular frame 11 match the edge width and inner opening size of the concrete mold. This should be understood as the edge width of the rectangular frame 11 being the same as the edge width of the concrete mold, while the inner opening size of the rectangular frame 11 is slightly larger than the inner opening size of the concrete mold, approximately 3-5 mm. A matching shock-absorbing pad 15 is also provided on the upper surface of the rectangular frame 11. The shock-absorbing pad 15 is made of rubber, and during demolding, the concrete mold is placed directly on the shock-absorbing pad 15, providing an anti-slip and shock-absorbing effect. On the upper surface of the base plate 2, within the four columns 12, are two parallel trapezoidal grooves 21. A trapezoidal slider 31 is fixedly connected to the lower surface of the buffer plate 3 at a position corresponding to the trapezoidal grooves 21. The trapezoidal slider 31 engages with the trapezoidal grooves 21. The trapezoidal grooves 21 are directly formed on the upper surface of the base plate 2. The trapezoidal slider 31 is connected to the buffer plate 3 by welding. During installation, lubricant such as grease can be added to the trapezoidal grooves 21 to make the buffer plate 3 easier to pull out. A handle 32 is provided on the front side of the buffer plate 3 near the anti-collision door 14. The handle 32 is rotatably connected to two positioning rings fixed on the front side of the buffer plate 3. Since the width of the buffer plate 3 and the buffer pad 4 is smaller than the width of the anti-collision door 14, the buffer plate 3 can be easily pulled out by pulling the handle 32 when the anti-collision door 14 is open. The panels of the crash barrier 13 and the crash door 14 are made of steel plates, and a layer of polyurethane foam board is glued to the inside of the panels. During installation, the panels are welded and fixed to the columns 12 beforehand, and then the polyurethane foam board is glued to the inside of the panels. This ensures that the crash barrier 13 and the crash door 14 have strength, and also ensures that the concrete test block will not be damaged when it hits the inner polyurethane foam board during demolding.

[0016] In this embodiment, the left side of the crash barrier 14 is connected to the left column 12 via a hinge. A buckle 141 is installed on the right side of the crash barrier 14 panel. The buckle 141 is movably engaged with a limiting plate 121 installed on the right column 12. The buckle 141 is made of 6-8mm steel bar, bent into an L-shape, with its shorter end welded to the crash barrier 14 panel, while the longer end remains vertical. The limiting plate 121 is made of 5mm thick steel plate cut into a long strip, with a round hole at one end. After the fixed shaft is inserted, one end of the fixed shaft is welded to the right column 12. The end of the fixed shaft away from the column 12 should be larger than the diameter of the circular hole on the limiting plate 121 (the fixed shaft can be made of circular steel bars). This allows the limiting plate 121 to rotate around the fixed shaft while preventing the limiting plate 121 from falling off. This design also locks the anti-collision door 14, effectively preventing the concrete test block from falling out of the anti-collision door 14 during demolding, so as to prevent the concrete test block from hitting people or causing damage to the test block.

[0017] In this embodiment, the base plate 2 is made of steel plate, and positioning holes 21 are provided at all four corners. When the device is used for indoor demolding, it can be fixed by inserting expansion screws into the positioning holes 21. When it is used for outdoor demolding, a ground stake can be inserted into the positioning holes 21 and nailed to fix it, effectively preventing the device from tipping over during demolding and thus affecting the safety of use.

[0018] The method of using this device is as follows: When demolding concrete test blocks, this device inverts the concrete mold onto a shock-absorbing pad. The concrete test block is then demolded by hammering or using air pressure through holes at the bottom of the mold. Due to the restraint of the anti-collision plate and door, the falling concrete test block will land on the buffer pad. At this point, the anti-collision door is opened, the handle is pulled to remove the buffer plate, and the concrete test block on the buffer pad is removed, thus completing the demolding of the concrete test block. To demold concrete test blocks again, the above operation can be repeated.

[0019] It should be emphasized that the embodiments described in this invention are illustrative rather than limiting. Therefore, this invention includes, but is not limited to, the embodiments described in the specific implementation. Any other implementations derived by those skilled in the art based on the technical solutions of this invention are also within the scope of protection of this invention.

Claims

1. A manual demolding aid for concrete compressive strength test blocks, characterized in that, The frame (1) includes a rectangular frame (11) and columns (12) fixedly connected to the four corners below the rectangular frame (11). Anti-collision plates (13) are fixedly installed between the columns (12) on the left and right sides and the back of the frame (1). Anti-collision doors (14) are provided between the two columns on the front of the frame (1). The lower ends of the four columns (12) are fixedly connected to the upper surface of the base plate (2). A buffer plate (3) is slidably connected to the upper surface of the base plate (2) of the four columns (12). A buffer pad (4) is provided on the upper surface of the buffer plate. Positioning angle steel (5) is also fixedly connected to the four corners of the rectangular frame (11). The lower end of the positioning angle steel (5) extends to the column (12) and is fixedly connected to it.

2. The manual demolding auxiliary device for concrete compressive strength test blocks according to claim 1, characterized in that, The cubic cavity formed by the rectangular frame (11), the column (12) and the upper surface of the base plate (2), together with the anti-collision plate (13) and the anti-collision door (14), allows the concrete test block to fall vertically onto the buffer pad (4).

3. The manual demolding auxiliary device for concrete compressive strength test blocks according to claim 1, characterized in that, The width of the edge and the inner dimensions of the rectangular frame (11) are matched with the width of the edge and the inner dimensions of the concrete test mold. The upper surface of the rectangular frame (11) is also provided with a matching shock-absorbing pad (15).

4. The manual demolding auxiliary device for concrete compressive strength test blocks according to claim 1, characterized in that, The upper surface of the base plate (2) and located within the four columns (12) has two parallel trapezoidal grooves (21). The lower surface of the buffer plate (3) and the position corresponding to the trapezoidal grooves (21) are fixedly connected to a trapezoidal slider (31). The trapezoidal slider (31) and the trapezoidal groove (21) are engaged and locked together.

5. The manual demolding auxiliary device for concrete compressive strength test blocks according to claim 1, characterized in that, The buffer plate (3) has a handle (32) on the front side near the anti-collision door (14).

6. The manual demolding auxiliary device for concrete compressive strength test blocks according to claim 1, characterized in that, The panels of the anti-collision plate (13) and the anti-collision door (14) are made of steel plates, and a layer of polyurethane foam board is bonded to the inside of the panels.

7. The manual demolding auxiliary device for concrete compressive strength test blocks according to claim 1, characterized in that, The left side of the crash door (14) is connected to the left column (12) via a hinge. A buckle (141) is installed on the right side of the panel of the crash door (14). The buckle (141) is movably engaged with the limiting plate (121) installed on the right column (12).

8. The manual demolding auxiliary device for concrete compressive strength test blocks according to claim 1, characterized in that, The base plate (2) is made of steel plate, and positioning holes (22) are provided at all four corners.

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