A subway track traffic engineering material bending resistance detection device

Abstract

The utility model discloses a subway track traffic engineering material bending resistance detection device, including base, the top of base is fixedly installed with hydraulic cylinder through counterforce frame, the outer wall of counterforce frame is penetrated to be provided with the pass -through, the push rod end of hydraulic cylinder is fixedly connected with upper mounting beam through force transducer, the top of base and the corresponding place of upper mounting beam are fixedly installed with lower mounting beam, the utility model discloses when using, according to the detection method of required use, the bale of two slide holder bottoms or mounting seat bottoms is dismantled, after through hand wheel rotation bidirectional screw rod, can adjust the position of bale and the block, then place the engineering material sample of detection -waiting on the guide roller on the block top, and start hydraulic cylinder and push upper mounting beam and move down, can push the guide roller of the bottom end of remaining bale and press on the sample to carry out bending resistance detection to the sample, and the operation is simple and convenient, can satisfy the bending resistance detection demand of different track engineering new material, and the application scope is wide.

Claims

1. A bending resistance testing device for subway rail transit engineering materials, characterized in that: The system includes a base (1), on which a hydraulic cylinder (4) is fixedly mounted via a reaction frame (2) at the top. A through-hole (3) is provided through the outer wall of the reaction frame (2). An upper mounting beam (7) is fixedly connected to the push rod end of the hydraulic cylinder (4) via a force sensor (5). A lower mounting beam (8) is fixedly mounted at the top of the base (1) corresponding to the upper mounting beam (7). Two sliding blocks (12) are slidably mounted on the lower mounting beam (8). A mounting seat (14) is fixedly mounted in the middle of the bottom surface of the upper mounting beam (7). A connecting seat (13) is fixedly mounted in the middle of the top surface of the lower mounting beam (8). The connecting seat (13) and the mounting seat (14) are connected together. 4) A bidirectional screw (10) is rotatably installed on both sides. The slide (12) is fitted onto the corresponding bidirectional screw (10) through a threaded hole. The upper mounting beam (7) and the lower mounting beam (8) are rotatably connected to the bidirectional screw (10) through a bearing seat. A handwheel (11) is fixedly installed at one end of the bidirectional screw (10). A pressure block (20) is detachably installed at the bottom end of the mounting seat (14) and the bottom end of the slide (12) at the bottom of the upper mounting beam (7). A support block (19) is detachably installed at the top end of the slide (12) at the top of the lower mounting beam (8). A guide roller (21) is rotatably installed at one end of the support block (19) and the pressure block (20).

2. The bending resistance testing device for subway rail transit engineering materials according to claim 1, characterized in that: The end faces of the slide (12) and the mounting base (14) are provided with mounting grooves (28). The ends of the support block (19) and the pressure block (20) away from the guide roller (21) are adapted to the mounting grooves (28). The outer wall of the support block (19), i.e. the pressure block (20), located in the mounting groove (28) is provided with locking holes (22). Locking mechanisms are installed on the slide (12) and the mounting base (14), and the locking mechanisms are adapted to the locking holes (22).

3. The bending resistance testing device for subway rail transit engineering materials according to claim 2, characterized in that: The locking mechanism includes a slidable locking rod (23) mounted on a slide block (12), the locking rod (23) being adapted to a locking hole (22), a frame (24) being slidably fitted on the outer wall of the end of the locking rod (23) away from the locking hole (22), the slide block (12) and the mounting base (14) being fixedly connected to the corresponding frame (24), a baffle (25) being fixedly fitted on the outer wall of the locking rod (23) inside the frame (24), a spring (26) being fitted on the outer wall of the locking rod (23) inside the frame (24), and a pull ring (27) being fixedly connected to the end of the locking rod (23) away from the locking hole (22).

4. The bending resistance testing device for subway rail transit engineering materials according to claim 1, characterized in that: Both sides of the upper mounting beam (7) and the lower mounting beam (8) are provided with T-shaped guide grooves (9). The inner side wall of the slide block (12) is fixedly connected with a guide block (18). The guide block (18) is located in the corresponding T-shaped guide groove (9). The inner side of the slide block (12) is movably installed with a bolt (16). The bolt (16) is slidably installed in the corresponding T-shaped guide groove (9). The outer wall of the bolt (16) is fitted with a hand-tightening bolt (17).

5. The bending resistance testing device for subway rail transit engineering materials according to claim 1, characterized in that: The outer walls of the bidirectional screw (10) on both sides of the slide (12) are fitted with rubber corrugated tubes (15).

6. The bending resistance testing device for subway rail transit engineering materials according to claim 1, characterized in that: The top of the reaction frame (2) is slidably fitted with multiple guide rods (6), the bottom ends of which are fixedly connected to the top of the upper mounting beam (7).

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