A clamp for testing waterproof membrane

Abstract

This utility model provides a clamp for testing waterproof membrane rolls, including a lower body, an upper body, and a locking screw. The upper and lower bodies are each equipped with a detachable clamping plate, each with serrations. The upper and lower bodies each have a mounting groove, and the clamping plates have mounting portions. The upper and lower bodies also each have a mounting rod, a movable rod, and a first spring. The mounting portion has a mounting hole, and the first spring drives the mounting rod to extend into the mounting groove and pass through the mounting hole. The movable rod moves perpendicular to the mounting rod. The movable rod has a wedge-shaped portion, and the mounting rod has a sliding groove that mates with the wedge-shaped portion. When the movable rod moves, the wedge-shaped portion pushes the mounting rod away from the mounting groove and out of the mounting hole. This utility model solves the technical problem of inconvenient cleaning after adhesive substances adhere to existing clamps, resulting in the technical effect of easily removing the clamping plates for cleaning and preventing adhesive substances from affecting the stability of the clamping plates in holding the waterproof membrane.

Description

Technical Field

[0001] This utility model relates to the field of waterproof membrane testing technology, and in particular to a fixture for testing waterproof membranes. Background Technology

[0002] Waterproof membrane is a rollable sheet-like waterproof material, and one of the important types of waterproof materials in building engineering. It can be used in building walls, roofs, tunnels, highways, landfills, etc., to resist external rainwater and groundwater seepage. After the waterproof membrane is produced, it needs to be tested for properties such as pull-out, tensile, and peel strength. During the testing process, clamps are used to clamp and fix the membrane.

[0003] Chinese utility model patent CN211553556U discloses a clamp for testing waterproof membrane, including an upper clamping plate, a lower clamping plate, and a locking bolt. The upper clamping plate has a sliding hole, and the lower clamping plate has a corresponding threaded hole. The lower end of the locking bolt passes through the sliding hole and the threaded hole and is threadedly connected to the lower clamping plate. A rotating pad is provided on the upper upper surface of the upper clamping plate. One end of the rotating pad is hinged to the upper clamping plate, and the other end of the rotating pad is rotatably engaged between the bolt head of the locking bolt and the upper clamping plate. An upper clamping block is provided on the lower end face of the front end of the upper clamping plate, and a lower clamping block adapted to the upper clamping block is provided on the upper end face of the front end of the lower clamping plate. Both the upper and lower clamping blocks have mating clamping surfaces. Interlocking serrations are provided on the mating clamping surfaces of the upper and lower clamping blocks. The aforementioned clamp has serrations on the mating clamping surfaces of the upper and lower clamping blocks, which increases the friction between the clamp and the roll material, making the clamp and the roll material more tightly engaged and preventing the roll material from slipping and falling off during the pulling process.

[0004] When the waterproof membrane is clamped using the clamp disclosed in the aforementioned utility model patent, the waterproof membrane is placed between the serrations on the upper clamping block and the lower clamping block. Since the asphalt waterproof membrane contains asphalt and other sticky substances, the sticky substances on the waterproof membrane will adhere to the serrations during the testing process. This will reduce the friction between the upper and lower clamping blocks and the waterproof membrane during subsequent testing and affect the stability of the clamp holding the waterproof membrane. Furthermore, the space between the upper and lower clamping blocks is limited, making it inconvenient to clean the clamp after use. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a fixture for testing waterproof membranes, which solves the problem of inconvenient cleaning after adhesive substances adhere to the fixtures.

[0006] According to an embodiment of this utility model, a clamp for testing waterproof membrane includes a lower body, an upper body, and a locking screw. The upper body is vertically movably mounted on the lower body. The lower body has a threaded hole that mates with the locking screw, and one end of the locking screw abuts against the upper body. The upper and lower bodies are each provided with a detachable clamping plate. The two clamping plates have serrations on their adjacent sides, and the two clamping plates move closer or further apart when the upper body moves up and down on the lower body. The upper and lower bodies are each provided with a mounting groove, and the clamping plates... The upper part is provided with a mounting part that mates with the mounting groove. The upper and lower parts are also provided with a movable mounting rod, a movable movable rod, and a first spring that abuts against the mounting rod. The mounting part is provided with a mounting hole that aligns with the mounting rod, and the first spring drives the mounting rod to extend into the mounting groove and pass through the mounting hole. The moving direction of the movable rod is perpendicular to the moving direction of the mounting rod. The movable rod is provided with a wedge-shaped part, and the mounting rod is provided with a sliding groove that mates with the wedge-shaped part. When the movable rod moves, the wedge-shaped part pushes the mounting rod away from the mounting groove and out of the mounting hole.

[0007] Furthermore, the upper seat and the lower seat are respectively provided with a first guide hole and a second guide hole that are connected to each other. The first guide hole is connected to the mounting groove and aligned with the mounting hole. The mounting rod is disposed in the first guide hole. The axial direction of the second guide hole is perpendicular to the axial direction of the second guide hole, and the movable rod is disposed in the second guide hole.

[0008] Furthermore, the upper seat and the lower seat are respectively provided with a first plug, the first plug sealing the opening of the first guide hole and the first spring being located between the first plug and the mounting rod.

[0009] Furthermore, the upper seat and the lower seat are respectively provided with a second plug, the second plug seals the opening of the second guide hole and the second plug is provided with a through hole communicating with the second guide hole, and the end of the movable rod away from the mounting rod is provided with a pressing part, the pressing part extends out of the second guide hole through the through hole.

[0010] Furthermore, the movable rod is also provided with a limiting part connected to the wedge-shaped part, the limiting part passing through the sliding groove and abutting against the movable rod.

[0011] Furthermore, the upper seat and the lower seat are respectively provided with positioning grooves for accommodating the clamping plate, and the positioning grooves are connected to the mounting grooves.

[0012] Furthermore, the upper seat and the lower seat are respectively provided with positioning holes that communicate with the positioning groove, and the clamping plate is provided with positioning pins that cooperate with the positioning holes.

[0013] Furthermore, the lower seat body is provided with a pressure block and a guide rod connecting the lower seat body and the pressure block. The guide rod is vertically arranged on the lower seat body. The upper seat body is located between the pressure block and the lower seat body, and the upper seat body is provided with a third guide hole that cooperates with the guide rod. The threaded hole is located on the pressure block.

[0014] Furthermore, a second spring is sleeved on the guide rod. The second spring is located between the lower seat and the upper seat and drives the upper seat to move away from the lower seat.

[0015] Furthermore, an operating rod is provided at the end of the locking screw away from the pressure block, and the axial direction of the operating rod is perpendicular to the axial direction of the locking screw.

[0016] Compared with existing technologies, this utility model has the following advantages: By employing detachable clamping plates on the upper and lower seats respectively, and serrations on the sides of the two clamping plates that are close to each other, the waterproof membrane to be tested is placed between the two clamping plates. After the locking screw is rotated, the upper seat moves on the lower seat, causing the two clamping plates to move closer together until they clamp the waterproof membrane. At this point, the waterproof membrane can be tested. After the test is completed, rotating the locking screw allows the upper seat to move on the lower seat, causing the two clamping plates to move away from each other. After the two clamping plates separate, the tested waterproof membrane can be removed. When it is necessary to clean the sticky substances adhering to the clamping plates, the movable rod is moved so that the wedge-shaped part on the movable rod pushes the mounting rod out of the mounting plate. When installing the mounting hole, the mounting part can be removed from the mounting slot, and the clamping plate can be removed from the lower or upper seat to facilitate cleaning of the clamping plate. After removing the sticky material from the clamping plate, the mounting part is placed into the mounting slot, and the movable rod is released so that the mounting rod extends into the mounting hole under the push of the first spring. The elastic force provided by the first spring keeps the mounting rod in the mounting hole, thereby fixing the mounting part in the mounting slot and keeping the clamping plate on the lower or upper seat. This solves the technical problem of inconvenient cleaning after the existing clamps have sticky material adhering to them. It has the technical effect of making it easy to remove the clamping plate for cleaning and avoiding the sticky material from affecting the stability of the clamping plate in holding the waterproof membrane. Moreover, the clamping plate is easy to install and remove, and the clamp is easy to use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a waterproof membrane testing fixture according to an embodiment of the present invention;

[0018] Figure 2 This is a front view of a waterproof membrane testing fixture according to an embodiment of the present invention;

[0019] Figure 3 for Figure 2 A cross-sectional view along the AA direction;

[0020] Figure 4 for Figure 2 Cross-sectional view along the BB direction;

[0021] Figure 5 This is a cross-sectional view of the installation rod in the waterproof membrane testing fixture according to an embodiment of the present invention when it is removed from the installation hole;

[0022] Figure 6 This is a partially exploded view of the upper seat of a waterproof membrane testing fixture according to an embodiment of the present invention.

[0023] In the above figures: 1. Lower seat; 11. Mounting groove; 12. First guide hole; 13. Second guide hole; 14. First plug; 15. Second plug; 16. Positioning groove; 17. Positioning hole; 18. Pressure block; 19. Guide rod; 2. Upper seat; 21. Third guide hole; 3. Locking screw; 31. Operating rod; 4. Clamping plate; 41. Serration; 42. Mounting part; 43. Mounting hole; 44. Positioning pin; 5. Mounting rod; 51. Slide groove; 6. Movable rod; 61. Wedge-shaped part; 62. Pressing part; 63. Limiting part; 7. First spring; 8. Second spring; 9. Lifting ring. Detailed Implementation

[0024] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0025] like Figures 1 to 6 As shown in the figure, this utility model embodiment proposes a clamp for testing waterproof membrane, which is used to clamp and fix the waterproof membrane during the testing process.

[0026] Please refer to Figure 1 , Figure 2 and Figure 3The waterproof membrane testing fixture includes a lower body 1, an upper body 2, and a locking screw 3. The upper body 2 is vertically mounted on the lower body 1. The lower body 1 has a threaded hole that mates with the locking screw 3, and one end of the locking screw 3 abuts against the upper body 2. The upper body 2 and the lower body 1 are each provided with a detachable clamping plate 4. The two clamping plates 4 have serrations 41 on their adjacent sides. When the upper body 2 moves up and down on the lower body 1, the two clamping plates 4 move closer or further apart. After the waterproof membrane to be tested is placed between the two clamping plates 4, the upper body 2 can be moved on the lower body 1 by rotating the locking screw 3, thereby clamping the waterproof membrane between the two clamping plates 4. The upper seat 2 and the lower seat 1 are respectively provided with mounting grooves 11, and the clamping plate 4 is provided with mounting parts 42 that cooperate with the mounting grooves 11. The upper seat 2 and the lower seat 1 are also respectively provided with a movable mounting rod 5, a movable movable rod 6, and a first spring 7 that abuts against the mounting rod 5. The mounting part 42 is provided with a mounting hole 43 that is aligned with the mounting rod 5, and the first spring 7 drives the mounting rod 5 to extend into the mounting groove 11 and pass through the mounting hole 43. The elastic force provided by the first spring 7 can keep the mounting rod 5 in the mounting groove 11. The clamping plate 4 is fixed to the lower seat 1 or the upper seat 2 in the mounting groove 11. The moving direction of the movable rod 6 is perpendicular to the moving direction of the mounting rod 5. The movable rod 6 is provided with a wedge-shaped part 61 and the mounting rod 5 is provided with a sliding groove 51 that cooperates with the wedge-shaped part 61. When the movable rod 6 moves, the wedge-shaped part 61 pushes the mounting rod 5 away from the mounting groove 11 and out of the mounting hole 43. At this time, the mounting part 42 can be removed from the mounting groove 11 to remove the clamping plate 4 from the upper seat 2 or the lower seat 1.

[0027] Specifically, the operation steps for clamping and fixing the waterproof membrane using the waterproof membrane testing fixture provided in this embodiment are as follows: Place the waterproof membrane to be tested between the two clamping plates 4, rotate the locking screw 3 to move the upper seat 2 on the lower seat 1 so that the two clamping plates 4 move closer to each other until the two clamping plates 4 clamp the waterproof membrane and clamp the waterproof membrane between the serrations 41 on the two clamping plates 4. At this time, install the waterproof membrane testing fixture on the testing equipment, such as a tensile testing machine, to test the waterproof membrane. After the test is completed, rotate the locking screw 3 so that the upper seat 2 can move on the lower seat 1 and drive the two clamping plates 4 away from each other. After the two clamping plates 4 are separated, the tested waterproof membrane can be removed. When it is necessary to clean the sticky substance adhering to the clamping plate 4, move the movable rod 6 so that the wedge-shaped part 61 on the movable rod 6 pushes the mounting rod 5 out of the mounting hole 43. At this time, the mounting part 42 can be removed from the mounting groove 11, and the clamping plate 4 can be removed from the lower seat 1 or the upper seat 2, so that the clamping plate 4 can be cleaned easily. When the wedge-shaped part 61 pushes the mounting rod 5 to move, the spring is further compressed. After the clamping plate 4 is cleaned, put the mounting part 42 into the mounting groove 11, and then release the movable rod 6 so that the first spring 7 returns to its original length and pushes the mounting rod 5 into the mounting hole 43. At this time, the movable rod 6 moves in the opposite direction, and the elastic force provided by the first spring 7 keeps the mounting rod 5 in the mounting hole 43, thereby fixing the mounting part 42 in the mounting groove 11, so that the clamping plate 4 is kept on the lower seat 1 or the upper seat 2. The waterproof membrane testing fixture provided in this embodiment can remove the clamping plate 4, which is covered with adhesive substances, for cleaning. The disassembly and assembly operation is simple, which helps to keep the clamping plate 4 clean and avoid the adhesive substances affecting the stability of the clamping plate 4 in holding the waterproof membrane. This improves the reliability of the waterproof membrane testing fixture and facilitates its use.

[0028] Please combine Figure 4 , Figure 5 and Figure 6The upper seat 2 and the lower seat 1 are respectively provided with a first guide hole 12 and a second guide hole 13 that are connected to each other. The first guide hole 12 communicates with the mounting groove 11 and is aligned with the mounting hole 43. The mounting rod 5 is disposed in the first guide hole 12. The axis of the second guide hole 13 is perpendicular to the axis of the second guide hole 13, and the movable rod 6 is disposed in the second guide hole 13. The first guide hole 12 is provided on the upper seat 2 and the lower seat 1 for the mounting rod 5 to be installed, and the second guide hole 13 is provided on the lower seat 1 for the movable rod 6 to be installed. This ensures that the positions of the mounting rod 5 and the movable rod 6 on the upper seat 2 or the lower seat 1 remain stable, which helps to improve the stability of the cooperation between the mounting rod 5 and the movable rod 6, and at the same time prevents the mounting rod 5 or the movable rod 6 from deviating from the preset direction.

[0029] In detail, the upper seat 2 and the lower seat 1 are respectively provided with a first plug 14. The first plug 14 closes the opening of the first guide hole 12, and the first spring 7 is located between the first plug 14 and the mounting rod 5. The first plug 14 is used to close the opening of the first guide hole 12. After the mounting rod 5 and the first spring 7 are sequentially inserted into the first guide hole 12, the first plug 14 is installed at the opening of the first guide hole 12, so that the mounting rod 5 and the first spring 7 are held in the first guide hole 12, and the first spring 7 is kept in contact with the mounting rod 5, thereby improving the structural stability of the waterproof membrane testing fixture.

[0030] like Figure 4 and Figure 6As shown, the upper seat 2 and the lower seat 1 are respectively provided with a second plug 15. The second plug 15 closes the opening of the second guide hole 13 and the second plug 15 is provided with a through hole communicating with the second guide hole 13. The movable rod 6 is provided with a pressing part 62 at one end away from the mounting rod 5. The pressing part 62 extends out of the second guide hole 13 through the through hole. After the movable rod 6 is inserted into the second guide hole 13, the second plug 15 is used to seal the second guide hole 13 to prevent the movable rod 6 from detaching from the upper seat 2 or the lower seat 1 when it moves. A through hole is provided on the second plug 15 for the pressing part 62 to pass through. When the pressing part 62 is pressed and enters the second guide hole 13, the wedge part 61 moves and pushes the mounting rod 5 out of the mounting hole 43 and further compresses the first spring 7. After the pressing part 62 is released, the first spring 7 returns to its original length and pushes the mounting rod 5 into the mounting hole 43. At the same time, the movable rod 6 moves in the opposite direction under the drive of the mounting rod 5, so that the pressing part 62 extends out of the second guide hole 13. That is, the movable rod 6 can be easily moved by pressing the pressing part 62, which facilitates the use of the waterproof membrane testing fixture.

[0031] In this embodiment, the movable rod 6 is further provided with a limiting part 63 connected to the wedge-shaped part 61. The limiting part 63 passes through the slide groove 51 and abuts against the movable rod 6. The limiting part 63 abuts against the movable rod 6 to prevent the wedge-shaped part 61 from disengaging from the slide groove 51, thereby keeping the wedge-shaped part 61 within the slide groove 51 and ensuring reliable engagement between the movable rod 6 and the mounting rod 5.

[0032] like Figure 6 As shown, the upper seat 2 and the lower seat 1 are respectively provided with positioning grooves 16 for accommodating the clamping plate 4, and the positioning grooves 16 are connected to the mounting grooves 11. By providing the positioning grooves 16 on the upper seat 2 and the lower seat 1 respectively, the clamping plate 4 is positioned to facilitate the installation of the clamping plate 4 onto the upper seat 2 or the lower seat 1.

[0033] Specifically, the upper seat 2 and the lower seat 1 are respectively provided with positioning holes 17 communicating with the positioning groove 16, and the clamping plate 4 is provided with positioning pins 44 that cooperate with the positioning holes 17. When the clamping plate 4 is installed into the positioning groove 16, the positioning pins 44 extend into the positioning holes 17, which helps to further improve the stability of the clamping plate 4 in cooperation with the upper seat 2 or the lower seat 1, prevent the clamping plate 4 from deviating from the preset position during installation, and keep the mounting part 42 stable in the mounting groove 11.

[0034] Please refer to Figure 1 and Figure 2 The lower seat 1 is provided with a pressure block 18 and a guide rod 19 connecting the lower seat 1 and the pressure block 18. The guide rod 19 is vertically arranged on the lower seat 1. The upper seat 2 is located between the pressure block 18 and the lower seat 1, and the upper seat 2 is provided with a third guide hole 21 that cooperates with the guide rod 19. The threaded hole is located on the pressure block 18. The pressure block 18 is provided on the lower seat 1, and the guide rod 19 is provided to connect the lower seat 1 and the pressure block 18. The guide rod 19 cooperates with the third guide hole 21 on the upper seat 2 to limit the movement direction of the upper seat 2 on the lower seat 1, preventing the upper seat 2 from deviating from the preset direction and causing the two clamping plates 4 to misalign. The locking screw 3 is installed in the threaded hole on the pressure block 18. By rotating the locking screw 3 so that the locking screw 3 abuts against the side of the upper seat 2 away from the lower seat 1, the upper seat 2 can be pushed closer to the lower seat 1, and the upper seat 2 is locked in the position where the two clamping plates 4 clamp the waterproof membrane, ensuring that the clamping of the waterproof membrane by the waterproof membrane testing fixture is reliable.

[0035] In detail, a second spring 8 is sleeved on the guide rod 19. The second spring 8 is located between the lower seat 1 and the upper seat 2 and drives the upper seat 2 to move away from the lower seat 1. When the waterproof membrane inspection clamp clamps the waterproof membrane, the second spring 8 is further compressed. When the waterproof membrane is removed, rotating the locking screw 3 causes the upper seat 2 to move away from the lower seat 1 under the push of the second spring 8, so that the two clamping plates 4 automatically move away from each other, facilitating the removal of the waterproof membrane.

[0036] like Figure 2 As shown, an operating rod 31 is provided at the end of the locking screw 3 away from the pressure block 18, and the axis of the operating rod 31 is perpendicular to the axis of the locking screw 3. By rotating the operating rod 31, the locking screw 3 can be easily rotated, saving effort while ensuring that the waterproof membrane testing fixture clamps the waterproof membrane tightly, preventing the waterproof membrane from loosening during the testing process.

[0037] In this embodiment, the lower seat 1 is further provided with a lifting ring 9. The lifting ring 9 provided on the lower seat 1 is used to connect the waterproof membrane testing fixture to the testing equipment, such as a tensile testing machine, so as to facilitate the installation of the waterproof membrane testing fixture onto the testing equipment.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A fixture for testing waterproof membrane rolls, comprising a lower seat, an upper seat, and a locking screw, wherein the upper seat is movably mounted on the lower seat, the lower seat has a threaded hole that mates with the locking screw, and one end of the locking screw abuts against the upper seat, characterized in that: The upper and lower seats are each equipped with a detachable clamping plate. The two clamping plates have serrations on their adjacent sides, and the two clamping plates move closer or further apart when the upper seat moves up and down on the lower seat. The upper and lower seats are each equipped with a mounting groove, and the clamping plates are equipped with mounting parts that mate with the mounting groove. The upper and lower seats are also equipped with a movable mounting rod, a movable movable rod, and a first spring that abuts against the mounting rod. The mounting part is equipped with a mounting hole aligned with the mounting rod, and the first spring drives the mounting rod to extend into the mounting groove and pass through the mounting hole. The moving direction of the movable rod is perpendicular to the moving direction of the mounting rod. The movable rod is equipped with a wedge-shaped part, and the mounting rod is equipped with a sliding groove that mates with the wedge-shaped part. When the movable rod moves, the wedge-shaped part pushes the mounting rod away from the mounting groove and out of the mounting hole.

2. The fixture for testing waterproof membrane as described in claim 1, characterized in that: The upper seat and the lower seat are respectively provided with a first guide hole and a second guide hole that are connected to each other. The first guide hole is connected to the mounting groove and aligned with the mounting hole. The mounting rod is disposed in the first guide hole. The axial direction of the second guide hole is perpendicular to the axial direction of the second guide hole, and the movable rod is disposed in the second guide hole.

3. The fixture for testing waterproof membrane as described in claim 2, characterized in that: The upper seat and the lower seat are respectively provided with a first plug, the first plug closes the opening of the first guide hole and the first spring is located between the first plug and the mounting rod.

4. The fixture for testing waterproof membrane as described in claim 2, characterized in that: The upper seat and the lower seat are respectively provided with a second plug. The second plug closes the opening of the second guide hole and has a through hole communicating with the second guide hole. The movable rod has a pressing part at the end away from the mounting rod. The pressing part extends out of the second guide hole through the through hole.

5. The fixture for testing waterproof membrane as described in claim 1, characterized in that: The movable rod is also provided with a limiting part connected to the wedge-shaped part, the limiting part passing through the sliding groove and abutting against the movable rod.

6. The fixture for testing waterproof membrane as described in claim 1, characterized in that: The upper seat and the lower seat are respectively provided with positioning grooves for accommodating the clamping plate, and the positioning grooves are connected to the mounting grooves.

7. A fixture for testing waterproof membrane as described in claim 6, characterized in that: The upper seat and the lower seat are respectively provided with positioning holes that communicate with the positioning groove, and the clamping plate is provided with positioning pins that cooperate with the positioning holes.

8. The fixture for testing waterproof membrane as described in claim 1, characterized in that: The lower seat is provided with a pressure block and a guide rod connecting the lower seat and the pressure block. The guide rod is vertically arranged on the lower seat. The upper seat is located between the pressure block and the lower seat and is provided with a third guide hole that cooperates with the guide rod. The threaded hole is located on the pressure block.

9. A fixture for testing waterproof membrane as described in claim 8, characterized in that: A second spring is fitted onto the guide rod. The second spring is located between the lower seat and the upper seat and drives the upper seat to move away from the lower seat.

10. A fixture for testing waterproof membrane as described in claim 8, characterized in that: An operating rod is provided at the end of the locking screw away from the pressure block, and the axial direction of the operating rod is perpendicular to the axial direction of the locking screw.

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