Anti-pulling detection machine for rubber sealing tape for bridge expansion joint

Abstract

The invention relates to an anti-pulling detection machine for a rubber sealing tape for a bridge expansion joint. Comprising a rack, an upper cylinder, a locking structure, a lower cylinder, a pressure sensor and a top plate, wherein the upper cylinder is arranged at the upper end of the rack; the locking structure is in transmission with the lower end of the upper cylinder and is used for limiting a rubber sealing belt; the lower cylinder is arranged at the lower end of the rack and is opposite to the upper cylinder; an upper cavity used for containing a sealing structure and a rubber sealing belt is formed in the inner side of the upper end of the rack, and a middle cavity used for containing a lower air cylinder is formed in the center of the lower end wall of the rack. Compared with the prior art, the rubber sealing tape anti-pulling detection machine for the bridge expansion joint has the beneficial effects that the lower pressing block and the upper bracket form an engaged structure to limit the rubber sealing tape, and are matched with the guide wheel, the upper penetrating opening, the lower penetrating opening, the lower cavity and the upper cavity to quickly pull the rubber sealing tape and switch the segment area of the rubber sealing tape, so that the detection efficiency is improved, and the detection efficiency is improved. Therefore, the rubber sealing tape can be detected more comprehensively.

Description

Technical Field

[0001] The invention relates to the technical field of bridge construction, in particular to a rubber sealing belt anti-pulling detection machine for bridge expansion joints. Background Art

[0002] Bridge engineering refers to the work process of bridge survey, design, construction, maintenance and verification, as well as the science and engineering technology of studying this process. It is a branch of civil engineering. The development of bridge engineering mainly depends on the needs of transportation. Rubber sealing belts are used in the construction of bridge expansion joints, and the rubber sealing belts will be tested for resistance after processing. This testing machine is used to test the tensile resistance of rubber sealing belts.

[0003] When testing the tensile strength of the sealing tape, the sealing tape is placed in the machine body and the two ends of the sealing tape are moved in opposite directions for pulling. However, since the sealing tape is relatively long, it is generally wound in a roll. When testing the tensile strength, only a small section of the sealing tape can be tested. After testing a small section of the sealing tape, it is not possible to quickly test another node of the sealing tape, resulting in an unbalanced testing effect. Summary of the invention

[0004] The object of the present invention is to provide a rubber sealing tape tensile resistance testing machine for bridge expansion joints, so as to solve the problem proposed in the above-mentioned background technology that when testing the tensile resistance of the sealing tape, the sealing tape will be placed in the machine body, and the two ends of the sealing tape will be moved in opposite directions for pulling. However, since the sealing tape is relatively long, it is generally wound in a roll shape. When testing the tensile resistance, it is often only possible to test a small section of the sealing tape structure. After testing a small section of the sealing tape, it is impossible to quickly test another node of the sealing tape, resulting in the problem of unbalanced testing effect.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a rubber sealing belt anti-tear detection machine for bridge expansion joints, comprising a frame, an upper cylinder arranged at the upper end of the frame, a locking structure for limiting the rubber sealing belt and driven by the lower end of the upper cylinder, a lower cylinder arranged at the lower end of the frame and opposite to the upper cylinder, a pressure sensor driven by the upper end of the lower cylinder, and a top plate for pushing the rubber sealing belt arranged at the upper end of the pressure sensor, an upper chamber for placing the sealing structure and the rubber sealing belt is opened on the inner side of the upper end of the frame, a middle chamber for placing the lower cylinder is opened at the center of the lower end wall of the frame, guide wheels for guiding the rubber sealing belt are installed on the left and right end walls in the middle of the frame, upper openings for the rubber sealing belt to pass through are pierced on the left and right end walls of the upper end of the frame, and the left and right end walls of the lower end of the frame are opened The top plate is provided with a screw hole on the upper end wall, a stud is threadedly connected to the inner side of the screw hole, and a threading needle is fixed on the bottom end wall of the stud. The left and right end walls on the lower end of the frame are provided with a lower chamber for placing a rolled rubber sealing belt. The frame is provided with an outer opening on the rear center end wall near the lower chamber, and an inner opening is provided on the rear center end wall near the outer opening. The outer opening and the inner opening cooperate to plug in a roller member wrapped around the rubber sealing belt. The end walls of the frame near the outer opening are relatively provided with sliding grooves, and a sliding rod movably connected to the frame is arranged on the inner side of the sliding groove, and a spring is installed on the outer side of the sliding rod to move the sliding rod toward the outer opening, and a top strip that fits tightly with the plug-in roller member is installed on the end wall of the sliding rod near the outer opening.

[0006] Preferably, the sealing structure includes a connecting plate driven by the lower end of the upper cylinder, lower pressing blocks fixed at the left and right sides of the lower end of the connecting plate, and an upper supporting seat fixed to the frame and adapted in shape to the lower end of the lower pressing block.

[0007] Preferably, the connecting plate is a rectangular parallelepiped structure, the lower pressing block is a convex font shape, and the upper supporting seat is a concave font shape. The upper cylinder drives the connecting plate to move downward, and the lower pressing block and the upper supporting seat are tightly attached to form a bite.

[0008] Preferably, the guide wheel, the upper through-hole, the lower through-hole and the lower chamber are each provided with two, and the lower chamber and the lower through-hole are connected to allow the rolled rubber sealing belt placed in the lower chamber to pass through.

[0009] Preferably, the upper opening and the upper chamber are communicated with each other, and the rubber sealing belt is guided by a guide wheel and penetrates into the upper chamber.

[0010] Preferably, three screw holes are provided on the upper end wall of the top plate, and the studs are threadedly connected to the screw holes and are detachable, so that the studs can be loaded in the screw holes forwardly and reversely.

[0011] Preferably, the stud is loaded in the screw hole in a forward direction, with the threading needle facing the bottom of the screw hole and the flat end surface of the stud facing upward.

[0012] Preferably, the stud is reversely loaded in the screw mouth, with the threading needle facing the opening of the screw mouth and the flat end surface of the stud facing downward.

[0013] Preferably, there are two outer openings and two inner openings, and the number of slide grooves is three times the number of outer openings. At the same time, the slide rod is fixedly connected to the head end of the spring, the end of the spring is fixedly connected to the end wall of the frame near the slide groove, and the side end wall of the top strip is inclined.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention forms a bite-like structure through the lower pressing block and the upper supporting seat to limit the rubber sealing belt, and cooperates with the guide wheel, the upper through-hole, the lower through-hole, the lower chamber and the upper chamber to quickly pull the rubber sealing belt and switch the segment area of ​​the rubber sealing belt, so as to facilitate a more comprehensive detection of the rubber sealing belt.

[0016] 2. The present invention uses the stud at the screw mouth to load forward and backward, and is used to perform dual tests on the rubber sealing belt for anti-puncture and anti-pulling. The test effect is richer, and the test effect can be selected according to needs, making the test more flexible and convenient.

[0017] 3. The present invention uses two lower chambers synchronously to store two groups of rubber sealing belts, so that after one group is tested, the other group can be used to continue testing immediately, making the entire testing effect faster and more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a rubber sealing belt anti-tear testing machine for bridge expansion joints according to the present invention;

[0019] Figure 2 This is a schematic diagram of the front view structure of a slide bar and a top strip of a rubber sealing strip anti-tear test machine for bridge expansion joints of the present invention;

[0020] Figure 3 This is a schematic diagram of the top plate and screw thread structure of a rubber sealing belt anti-tear test machine for bridge expansion joints of the present invention;

[0021] Figure 4 It is a schematic diagram of the front view structure of the stud and the threading needle of a rubber sealing belt anti-pulling tester for bridge expansion joints of the present invention;

[0022] Figure 5 This is a schematic diagram of the enlarged structure of point A of a rubber sealing tape tensile test machine for bridge expansion joints of the present invention.

[0023] In the figure: 1. frame; 2. upper chamber; 3. upper cylinder; 4. connecting plate; 5. lower pressure block; 6. upper support seat; 7. guide wheel; 8. upper through-hole; 9. lower through-hole; 10. middle chamber; 11. lower cylinder; 12. pressure sensor; 13. top plate; 14. screw mouth; 15. stud; 16. threading needle; 17. lower chamber; 18. outer mouth; 19. inner mouth; 20. slide groove; 21. slide rod; 22. spring; 23. top strip. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] See also Figure 1-5The present invention provides a technical solution: a rubber sealing belt anti-pulling detection machine for bridge expansion joints, comprising a frame 1, an upper cylinder 3 arranged at the upper end of the frame 1, a locking structure for limiting the rubber sealing belt driven by the lower end of the upper cylinder 3, a lower cylinder 11 arranged at the lower end of the frame 1 and opposite to the upper cylinder 3, a pressure sensor 12 driven by the upper end of the lower cylinder 11, and a top plate 13 for pushing the rubber sealing belt arranged at the upper end of the pressure sensor 12, an upper chamber 2 for placing the sealing structure and the rubber sealing belt is opened on the inner side of the upper end of the frame 1, the sealing structure comprises a connecting plate 4 driven by the lower end of the upper cylinder 3, a lower pressing block 5 fixed at the left and right sides of the lower end of the connecting plate 4, and an upper supporting seat 6 fixed to the frame 1 and adapted to the shape of the lower end of the lower pressing block 5, the connecting plate 4 is a rectangular parallelepiped structure, and the lower pressing block 5 is in a convex font shape, and the upper supporting seat 6 is in a concave font shape, the upper cylinder 3 drives the connecting plate 4 to move downward, and the lower pressing block 5 and the upper supporting seat 6 are tightly attached to form an occlusion;

[0028] A middle chamber 10 for placing a lower cylinder 11 is provided at the center of the lower end wall of the frame 1, guide wheels 7 for guiding the rubber sealing belt are installed on the left and right end walls of the middle part of the frame 1, upper through-holes 8 for passing the rubber sealing belt are penetrated on the left and right end walls of the upper end of the frame 1, and lower through-holes 9 for matching the upper through-holes 8 to pass through the rubber sealing bag are penetrated on the left and right end walls of the lower end of the frame 1, and lower chambers 17 for placing rolled rubber sealing belts are provided on the left and right end walls of the lower end of the frame 1, and an outer opening 18 is provided on the rear center end wall of the frame 1 near the lower chamber 17, and the guide wheels 7, the upper through-holes 8, and the lower There are two through-holes 9 and two lower chambers 17. The lower chamber 17 and the lower through-holes 9 are connected to each other for the rolled rubber sealing belt placed in the lower chamber 17 to pass through. The upper through-holes 8 and the upper chamber 2 are connected to each other. The rubber sealing belt is guided by the guide wheel 7 and penetrates into the upper chamber 2, so that the rubber sealing belt is stretched and laid flat on the two lower pressing blocks 5 and the upper supporting seat 6. When the upper cylinder 3 drives the connecting plate 4 to move downward, the lower pressing block 5 and the upper supporting seat 6 are closely attached to and bite the rubber sealing belt, limiting the position of the rubber sealing belt, and forming a small segment area in the upper chamber 2, so as to facilitate the subsequent tensile resistance test;

[0029] A screw hole 14 is provided at the upper end wall of the top plate 13, a stud 15 is threadedly connected to the inner side of the screw hole 14, a threading pin 16 is fixed to the bottom end wall of the stud 15, three screw holes 14 are provided at the upper end wall of the top plate 13, the stud 15 is threadedly connected to the screw hole 14 and can be detached, so that the stud 15 can be loaded in the screw hole 14 in the forward and reverse directions;

[0030] The stud 15 is loaded in the screw mouth 14 in the forward direction, so that the needle 16 faces the bottom of the screw mouth 14, and the flat end face of the stud 15 faces upward. When the lower cylinder 11 runs and pushes the pressure sensor 12 and the top plate 13 upward, the top plate 13 and the stud 15 are pressed against the end wall of the rubber sealing belt forming a small segment area in the upper chamber 2, so that the middle part of the sealing belt limited by the two ends of the segment is pushed upward to form a pulling shape, so as to detect the anti-pulling effect of the sealing belt;

[0031] The stud 15 is reversely loaded in the screw mouth 14, so that the piercing needle 16 faces the opening of the screw mouth 14, and the flat end face of the stud 15 faces downward. At this time, the piercing needle 16 is rotated to protrude from the screw mouth 14. When the lower cylinder 11 operates and pushes the pressure sensor 12 and the top plate 13 upward, the piercing needle 16 is pressed against the end wall of the rubber sealing belt forming a small segment area in the upper chamber 2 to detect the anti-puncture effect of the sealing belt;

[0032] An inner opening 19 is provided at the rear center end wall of the frame 1 near the outer opening 18. The outer opening 18 and the inner opening 19 cooperate to insert a roller member wrapped with a rubber sealing belt. A slide groove 20 is relatively provided at the end wall of the frame 1 near the outer opening 18. A slide rod 21 movably connected to the frame 1 is arranged on the inner side of the slide groove 20. A spring 22 is installed on the outer side of the slide rod 21 to move the slide rod 21 toward the outer opening 18. A top strip 23 that fits tightly with the inserted roller member is installed on the end wall of the slide rod 21 near the outer opening 18. There are two outer openings 18 and two inner openings 19, and the number of slide grooves 20 is three times the number of outer openings 18. At the same time, the slide rod 21 is fixedly connected to the head end of the spring 22, and the end end of the spring 22 is fixedly connected to the end wall of the frame 1 near the slide groove 20. The side end wall of the top strip 23 One end of the rubber sealing belt formed by winding the roller is inclined and inserted along the outer opening 18 and the inner opening 19, and first contacts the inclined end wall of the top strip 23 to squeeze the top strip 23. At this time, the three top strips 23 move toward the side away from the center of the outer opening 18, so that the rubber sealing belt formed by winding the roller is inserted into the lower chamber 17. The three top strips 23 move toward the center of the outer opening 18 through the elastic force of the spring 22, so that the rubber sealing belt formed by winding the roller is simply placed in the lower chamber 17, and the materials are simply placed. The two lower chambers 17 are used to classify and place two groups of materials, which is convenient for the materials to be quickly pulled out when in use, and then the sealing belt is segmented. Multiple segments of the same sealing belt can be quickly tested, and the detection effect is more comprehensive and thorough.

[0033] In summary, the bridge expansion joint rubber sealing belt tensile testing machine, when used,

[0034] First, insert one end of the rubber sealing belt formed by winding the roller along the outer opening 18 and the inner opening 19, and the end wall of the roller first contacts the inclined end wall of the top strip 23 to squeeze the top strip 23. At this time, the three top strips 23 move away from the center of the outer opening 18, so that the rubber sealing belt formed by winding the roller is inserted into the lower chamber 17. A group of materials is placed in each of the two lower chambers 17, so that after one of the two groups of materials is tested, the other group can be quickly switched to continue testing.

[0035] During the inspection, the rolled rubber seal placed in the lower chamber 17 is pulled out, passes through the lower through-hole 9, is guided by the guide wheel 7 and passes through the upper through-hole 8 into the upper chamber 2, and the rubber sealing belt is stretched and laid flat on the two lower pressing blocks 5 and the upper supporting seat 6. At this time, the upper cylinder 3 drives the connecting plate 4 to move downward, and the lower pressing block 5 and the upper supporting seat 6 are tightly attached to and bite the rubber sealing belt, and the two ends of the small segment area of ​​the rubber sealing belt are synchronously limited. Here, the central part of the rubber sealing belt in the small segment area is suspended;

[0036] Afterwards, according to the requirements of puncture resistance and pulling resistance, the stud 15 in the screw mouth 14 is installed forward and reversely, specifically:

[0037] The stud 15 is loaded in the screw mouth 14 in the forward direction, so that the needle 16 faces the bottom of the screw mouth 14, and the flat end face of the stud 15 faces upward. When the lower cylinder 11 runs and pushes the pressure sensor 12 and the top plate 13 upward, the top plate 13 and the stud 15 are pressed against the end wall of the rubber sealing belt forming a small segment area in the upper chamber 2, so that the middle part of the sealing belt limited by the two ends of the segment is pushed upward to form a pulling shape, so as to detect the anti-pulling effect of the sealing belt;

[0038] The stud 15 is reversely loaded in the screw mouth 14, so that the piercing needle 16 faces the opening of the screw mouth 14, and the flat end face of the stud 15 faces downward. At this time, the piercing needle 16 is rotated to protrude from the screw mouth 14. When the lower cylinder 11 operates and pushes the pressure sensor 12 and the top plate 13 upward, the piercing needle 16 is pressed against the end wall of the rubber sealing belt forming a small segment area in the upper chamber 2 to detect the anti-puncture effect of the sealing belt;

[0039] After testing the resistance of this section of area, move the upper cylinder 3 upward to operate, move the connecting plate 4 upward, separate the lower pressing block 5 and the upper supporting seat 6, and release the bite positioning of the rubber sealing belt. At this time, continue to pull the rubber sealing belt, so that another section of the rubber sealing belt is laid flat on the two lower pressing blocks 5 and the upper supporting seat 6, and test the other section area of ​​the rubber sealing belt again, thereby performing a more thorough and comprehensive test on the rubber sealing belt.

[0040] After the inspection of a single set of rubber sealing tapes is completed, another set of rubber sealing tapes is immediately pulled to continue the inspection, and the inspection efficiency is also higher.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A rubber sealing belt anti-tear test machine for bridge expansion joints, comprising a frame (1), an upper cylinder (3) arranged at the upper end of the frame (1), a locking structure for limiting the rubber sealing belt driven by the lower end of the upper cylinder (3), a lower cylinder (11) arranged at the lower end of the frame (1) and opposite to the upper cylinder (3), a pressure sensor (12) driven by the upper end of the lower cylinder (11), and a top plate (13) arranged at the upper end of the pressure sensor (12) for pushing the rubber sealing belt, characterized in that: An upper chamber (2) for placing a sealing structure and a rubber sealing belt is provided on the inner side of the upper end of the frame (1); a middle chamber (10) for placing a lower cylinder (11) is provided at the center of the lower end wall of the frame (1); guide wheels (7) for guiding the rubber sealing belt are installed on the left and right end walls of the middle part of the frame (1); upper holes (8) for passing the rubber sealing belt are penetrated on the left and right end walls of the upper end of the frame (1); lower holes (9) for matching the upper holes (8) to pass through the rubber sealing bag are penetrated on the left and right end walls of the lower end of the frame (1); a screw hole (14) is provided on the upper end wall of the top plate (13); a stud (15) is threadedly connected to the inner side of the screw hole (14); a threading needle (16) is fixed on the bottom end wall of the stud (15); and the left and right end walls of the lower end of the frame (1) are provided. A lower chamber (17) for placing a rolled rubber sealing belt is provided at the wall, an outer opening (18) is provided at the rear center end wall of the frame (1) close to the lower chamber (17), an inner opening (19) is provided at the rear center end wall of the frame (1) close to the outer opening (18), the outer opening (18) and the inner opening (19) cooperate to plug in a roller member wound with the rubber sealing belt, a slide groove (20) is provided at the end wall of the frame (1) close to the outer opening (18), a slide rod (21) movably connected to the frame (1) is arranged inside the slide groove (20), a spring (22) for moving the slide rod (21) toward the outer opening (18) is installed on the outer side of the slide rod (21), and a top strip (23) tightly fitting with the plugged roller member is installed at one end wall of the slide rod (21) close to the outer opening (18).

2. The rubber sealing tape tensile testing machine for bridge expansion joints according to claim 1 is characterized by: The sealing structure comprises a connecting plate (4) driven by the lower end of the upper cylinder (3), a lower pressing block (5) fixed at the left and right sides of the lower end of the connecting plate (4), and an upper supporting seat (6) fixed to the frame (1) and arranged to match the shape of the lower end of the lower pressing block (5).

3. The rubber sealing tape tensile testing machine for bridge expansion joints according to claim 2 is characterized by: The connecting plate (4) is a rectangular parallelepiped structure, the lower pressing block (5) is a convex font shape, and the upper supporting seat (6) is a concave font shape. The upper cylinder (3) drives the connecting plate (4) to move downward, and the lower pressing block (5) and the upper supporting seat (6) are tightly attached to each other and form a bite.

4. The rubber sealing tape tensile testing machine for bridge expansion joints according to claim 1 is characterized by: The guide wheel (7), the upper through hole (8), the lower through hole (9) and the lower chamber (17) are each provided with two, and the lower chamber (17) and the lower through hole (9) are connected to each other so that the rolled rubber sealing belt placed in the lower chamber (17) can pass through.

5. The rubber sealing tape tensile testing machine for bridge expansion joints according to claim 4 is characterized by: The upper penetration opening (8) and the upper chamber (2) are connected, and the rubber sealing belt is guided by the guide wheel (7) and penetrates into the upper chamber (2).

6. The rubber sealing tape tensile testing machine for bridge expansion joints according to claim 1 is characterized by: The upper end wall of the top plate (13) is provided with three screw holes (14), and the studs (15) are threadedly connected in the screw holes (14) and are detachable, so that the studs (15) can be loaded in the screw holes (14) in the forward and reverse directions.

7. The rubber sealing tape tensile testing machine for bridge expansion joints according to claim 6 is characterized by: The stud (15) is loaded in the screw hole (14) in a positive direction, with the threading needle (16) facing the bottom of the screw hole (14) and the flat end surface of the stud (15) facing upward.

8. The rubber sealing tape tensile testing machine for bridge expansion joints according to claim 6 is characterized by: The stud (15) is reversely loaded in the screw hole (14) so ​​that the threading needle (16) faces the opening of the screw hole (14) and the flat end surface of the stud (15) faces downward.

9. The rubber sealing tape tensile testing machine for bridge expansion joints according to claim 1 is characterized by: The outer opening (18) and the inner opening (19) are both provided with two, and the number of the slide grooves (20) is three times the number of the outer openings (18). At the same time, the slide rod (21) is fixedly connected to the head end of the spring (22), the tail end of the spring (22) is fixedly connected to the end wall of the frame (1) near the slide groove (20), and the side end wall of the top strip (23) is inclined.

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