Hose fatigue testing machine

Abstract

The utility model provides a hose fatigue testing machine, which relates to the technical field of fatigue testing machines, and comprises a main frame body, an electric box, a pulley, a steel wire rope, a hose and a weight, and a winding mechanism is arranged at the bottom of the main frame body; the assembling rod is rotated to drive one end of the bolt head to face upwards, the bolt head is screwed into the bottom end of the hose to fix the weight at the bottom end of the hose, the bottom end of the hose is pulled by the weight of the weight to fall downwards, and then the top end of the hose is screwed to the bolt head at the bottom end of the connecting rod. The motor can drive the rotating shaft to rotate at the bottom of the main frame body, the rotating shaft can drive the winding disc to rotate, when the winding disc rotates anticlockwise, the steel wire rope is wound, and the steel wire rope can pull the top end of the hose to move upwards, so that the top end and the bottom end of the hose are stressed at the same time; the device is used for performing fatigue test on hoses.

Description

Technical Field

[0001] The utility model relates to the technical field of fatigue testing machines, in particular to a hose fatigue testing machine. Background Art

[0002] A fatigue testing machine is a test equipment used to determine the fatigue performance of metal, non-metal and their alloy materials under tensile, compressive or tensile-compressive alternating loads at room temperature or a specific temperature state. It can simulate various fatigue conditions that may occur in actual use, such as vibration, bending, tensile-compression, etc., so as to help researchers and engineers understand the fatigue behavior of materials and provide a basis for product design and quality control;

[0003] A hose, as a flexible pipe, is mainly made of various materials, such as stainless steel, metal, corrugated, plastic and rubber, etc. According to different classification standards, hoses can be divided into various types: classified by use: mainly including threading hoses, drainage hoses, ventilation hoses, shower hoses and wire harness hoses, etc.; classified by material: mainly divided into stainless steel hoses, metal hoses, corrugated hoses, plastic hoses and rubber hoses, etc.;

[0004] At present, the fastening components for docking with both ends of the hose in the testing machine are generally fixed structures. When the pipe is stressed, the fastening components cannot achieve a constant fixing force, and the test results are inaccurate, unable to simulate the actual use conditions. Therefore, the hose fatigue testing machine is proposed by the utility model to solve the above problems. Summary of the Utility Model

[0005] In view of the above problems, the utility model provides a hose fatigue testing machine to solve the problem that when the hose is stressed, the fastening components cannot achieve a constant fixing force and the test results are inaccurate in the prior art.

[0006] To achieve the purpose of the utility model, the utility model is realized through the following technical solutions: A hose fatigue testing machine includes a main frame body, an electric box, pulleys, steel wire ropes, hoses and weights. An electric box is fixedly connected to one side of the main frame body. Pulleys are symmetrically and rotatably connected to both sides of the top of the main frame body. Steel wire ropes are wound around the outer sides of the pulleys. The bottom ends of the steel wire ropes are respectively detachably connected to a hose and a weight through a connecting mechanism. A winding mechanism is arranged at the bottom of the main frame body.

[0007] The further improvement lies in that: The connecting mechanism includes a connecting rod, a hinge seat, an assembly rod, a threaded hole and a bolt head. One end of the steel wire rope is fixedly connected to the connecting rod. A hinge seat is fixedly connected to the top of the weight. The top end of the hinge seat is hinged to the assembly rod. A threaded hole is arranged at the top end of the assembly rod. Bolt heads are fixedly connected to the bottom ends of the connecting rod and the assembly rod.

[0008] A further improvement lies in that: threaded sleeves are fixedly connected to both the top end and the bottom end of the hose, the outer wall of the bolt head is threadedly connected to the inner wall of the threaded sleeve, and a nylon sleeve is provided at the top end of the hinge seat.

[0009] A further improvement lies in that: the winding mechanism includes a rotating shaft, a winding disc and a motor. The bottom of the main frame body is rotatably connected to the rotating shaft. Winding discs are fixedly connected to both ends of the rotating shaft. One end of the steel wire rope is fixedly connected to the outer wall of the winding disc. A motor is fixedly installed on one side of the bottom of the main frame body, and the output end of the motor is fixedly connected to one end of the rotating shaft.

[0010] A further improvement lies in that: heat dissipation holes are provided on both sides of the top of the electric box. The electric box is electrically connected to the motor through a wire, and a box door is hinged on one side of the electric box.

[0011] A further improvement lies in that: support frames are symmetrically and fixedly connected to both sides of the main frame body. Rotating rods are symmetrically hinged to the top end and the bottom end of the support frame. Wooden wheels are symmetrically fixedly connected to both ends of the rotating rod. One end of the pulley passes through the two wooden wheels in sequence and forms a V-shaped structure.

[0012] A further improvement lies in that: the material of the main frame body is set as aluminum profile, the shape of the weight is set as a cylindrical structure, and the material of the weight is set as cast iron.

[0013] The beneficial effects of the present utility model are as follows: Rotate the assembly rod to drive one end of the bolt head upward, screw this bolt head into the bottom end of the hose to fix the weight at the bottom end of the hose. Use the weight of the weight to pull the bottom end of the hose downwards. Then, screw the top end of the hose onto the bolt head at the bottom end of the connecting rod to connect the hose and the steel wire rope together. The motor can drive the rotating shaft to rotate at the bottom of the main frame body, and the rotating shaft can drive the winding disc to rotate. When the winding disc rotates counterclockwise, the steel wire rope is wound, and the steel wire rope can pull the top end of the hose upward, so that both the top end and the bottom end of the hose are stressed to conduct a fatigue test on the hose. Description of the Drawings

[0014] Figure 1 is the front view of the present utility model;

[0015] Figure 2 is the side view of the present utility model;

[0016] Figure 3 is the connection schematic diagram of the weight of the present utility model;

[0017] Figure 4 is the hose structure schematic diagram of the present utility model.

[0018] Wherein: 1. Main frame; 2. Electric box; 3. Pulley; 4. Steel wire rope; 5. Hose; 6. Counterweight; 7. Rotating shaft; 8. Reel; 9. Motor; 10. Support frame; 11. Rotating rod; 12. Wooden wheel; 13. Connecting rod; 14. Hinge seat; 15. Assembly rod; 16. Threaded hole; 17. Bolt head; 18. Threaded sleeve. Detailed implementation mode

[0019] In order to deepen the understanding of the present utility model, the present utility model will be further described in detail below in conjunction with embodiments. These embodiments are only used to explain the present utility model and do not constitute a limitation on the protection scope of the present utility model.

[0020] According to Figure 1 、 2 As shown in FIGS. 3 and 4, this embodiment provides a hose fatigue testing machine, which includes a main frame 1, an electric box 2, a pulley 3, a steel wire rope 4, a hose 5 and a counterweight 6. An electric box 2 is fixedly connected to one side of the main frame 1. Pulleys 3 are symmetrically and rotatably connected to both sides of the top of the main frame 1. A steel wire rope 4 is wound around the outside of the pulley 3. The bottom end of the steel wire rope 4 is detachably connected to a hose 5 and a counterweight 6 respectively through a connecting mechanism. A winding mechanism is provided at the bottom of the main frame 1. When this hose fatigue testing machine is in use, the hose 5 and the counterweight 6 are fixed to one end of the steel wire rope 4 through the connecting mechanism, and the counterweight 6 is located at the bottom end of the hose 5. The gravity of the counterweight 6 itself is used to drive the hose 5 to fall downward, and then the steel wire rope 4 is wound by the winding mechanism. The steel wire rope 4 will pull the top end of the hose 5 to move upward, so that both the top end and the bottom end of the hose 5 are stressed, so as to conduct a fatigue test on the hose 5. And there are two groups of fatigue test objects, which improves the accuracy of the test on the hose 5.

[0021] The connecting mechanism includes a connecting rod 13, a hinge seat 14, an assembly rod 15, a threaded hole 16 and a bolt head 17. One end of the steel wire rope 4 is fixedly connected to a connecting rod 13. A hinge seat 14 is fixedly connected to the top of the counterweight 6. The top end of the hinge seat 14 is hinged to an assembly rod 15. A threaded hole 16 is provided at the top end of the assembly rod 15. Bolt heads 17 are fixedly connected to the bottom ends of the connecting rod 13 and the assembly rod 15. First, rotate the assembly rod 15 to drive one end of the bolt head 17 upward, and screw this bolt head 17 into the threaded sleeve 18 at the bottom end of the hose 5 to fix the counterweight 6 to the bottom end of the hose 5. The weight of the counterweight 6 is used to pull the bottom end of the hose 5 to fall downward. Then, the threaded sleeve 18 at the top end of the hose 5 is screwed onto the bolt head 17 at the bottom end of the connecting rod 13 to connect the hose 5 and the steel wire rope 4 together.

[0022] Both the top and bottom ends of the hose 5 are fixedly connected with threaded sleeves 18. The outer wall of the bolt head 17 is threadedly connected with the inner wall of the threaded sleeve 18. A nylon sleeve is provided at the top end of the hinge seat 14. Since the nylon sleeve can increase the friction between the assembly rod 15 and the hinge seat 14, the assembly rod 15 can be locked in position after rotation. When the test is no longer carried out, rotate the threaded hole 16 at one end of the assembly rod 15 upward and screw the threaded hole 16 onto the bolt head 17 at the bottom end of the connecting rod 13 to fix the weight 6 and the connecting rod 13 together, preventing the weight 6 from being randomly placed and lost. Moreover, by replacing the weights 6 with different weights, the force at the bottom end of the hanging hose 5 can be changed.

[0023] The winding mechanism includes a rotating shaft 7, a winding disc 8 and a motor 9. The bottom of the main frame 1 is rotatably connected with the rotating shaft 7. Both ends of the rotating shaft 7 are fixedly connected with the winding disc 8. One end of the steel wire rope 4 is fixedly connected with the outer wall of the winding disc 8. A motor 9 is fixedly installed on one side of the bottom of the main frame 1. The output end of the motor 9 is fixedly connected with one end of the rotating shaft 7. The motor 9 can drive the rotating shaft 7 to rotate at the bottom of the main frame 1. The rotating shaft 7 can drive the winding disc 8 to rotate. When the winding disc 8 rotates counterclockwise, the steel wire rope 4 is wound, and the steel wire rope 4 can pull the top end of the hose 5 upward. When the winding disc 8 rotates clockwise to pay out the steel wire rope 4, the steel wire rope 4 drives the top end of the hose 5 to move downward and reset.

[0024] Both sides of the top of the electric box 2 are provided with heat dissipation holes. The electric box 2 is electrically connected with the motor 9 through a wire. One side of the electric box 2 is hinged with a box door. The electric box 2 transmits electric energy to the inside of the motor 9 through a wire. The motor 9 receives and generates electric energy to drive the rotating shaft 7 to rotate. The heat generated when the electric box 2 works can be dissipated outward through the heat dissipation holes, preventing the electric box 2 from stopping working due to overheating.

[0025] Both sides of the main frame 1 are symmetrically and fixedly connected with support frames 10. The top and bottom ends of the support frames 10 are symmetrically hinged with rotating rods 11. Both ends of the rotating rods 11 are symmetrically and fixedly connected with wooden wheels 12. One end of the pulley 3 passes through the two wooden wheels 12 in sequence and forms a V-shaped structure. The steel wire rope 4 is wound around a group of wooden wheels 12 and is bent into a V-shaped structure to tension the steel wire rope 4 and prevent the steel wire rope 4 from slipping during movement.

[0026] The material of the main frame 1 is set as aluminum profile. The shape of the weight 6 is set as a cylindrical structure. The material of the weight 6 is set as cast iron.

[0027] For this hose fatigue testing machine, first rotate the assembly rod 15 to drive one end of the bolt head 17 upward, and screw this bolt head 17 into the threaded sleeve 18 at the bottom of the hose 5 to fix the weight 6 at the bottom of the hose 5. Use the weight of the weight 6 to pull the bottom of the hose 5 downward. Then, screw the threaded sleeve 18 at the top of the hose 5 onto the bolt head 17 at the bottom of the connecting rod 13 to connect the hose 5 with the steel wire rope 4. The motor 9 can drive the rotating shaft 7 to rotate at the bottom of the main frame 1, and the rotating shaft 7 can drive the winding disc 8 to rotate. When the winding disc 8 rotates counterclockwise, the steel wire rope 4 is wound, and the steel wire rope 4 can pull the top of the hose 5 upward, so that the top and bottom of the hose 5 are simultaneously stressed to conduct a fatigue test on the hose 5. Moreover, the objects of the fatigue test are two groups, improving the accuracy of the test on the hose 5.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. Hose fatigue testing machine, comprising a main frame body (1), an electric box (2), pulleys (3), steel wire ropes (4), hoses (5) and counterweights (6), characterized in that: One side of the main frame body (1) is fixedly connected with an electric box (2). On both sides of the top of the main frame body (1), pulleys (3) are symmetrically and rotatably connected. A steel wire rope (4) is wound around the outside of the pulley (3). The bottom end of the steel wire rope (4) is detachably connected with a hose (5) and a weight (6) respectively through a connecting mechanism. A winding mechanism is arranged at the bottom of the main frame body (1). The connecting mechanism includes a connecting rod (13), a hinge seat (14), an assembly rod (15), a threaded hole (16) and a bolt head (17). One end of the steel wire rope (4) is fixedly connected with a connecting rod (13). The top of the weight (6) is fixedly connected with a hinge seat (14). The top end of the hinge seat (14) is hinged with an assembly rod (15). A threaded hole (16) is arranged at the top end of the assembly rod (15). The bottom ends of the connecting rod (13) and the assembly rod (15) are fixedly connected with a bolt head (17).

2. The hose fatigue testing machine according to claim 1, characterized in that: Threaded sleeves (18) are fixedly connected to both the top end and the bottom end of the hose (5). The outer wall of the bolt head (17) is threadedly connected with the inner wall of the threaded sleeve (18). A nylon sleeve is arranged at the top end of the hinge seat (14).

3. The hose fatigue testing machine according to claim 1, wherein: The winding mechanism includes a rotating shaft (7), a winding disc (8) and a motor (9). The rotating shaft (7) is rotatably connected to the bottom of the main frame body (1). Winding discs (8) are fixedly connected to both ends of the rotating shaft (7). One end of the steel wire rope (4) is fixedly connected to the outer wall of the winding disc (8). A motor (9) is fixedly installed on one side of the bottom of the main frame body (1). The output end of the motor (9) is fixedly connected to one end of the rotating shaft (7).

4. The hose fatigue testing machine according to claim 3, wherein: Heat dissipation holes are arranged on both sides of the top of the electric box (2). The electric box (2) is electrically connected to the motor (9) through a wire. A box door is hinged on one side of the electric box (2).

5. The hose fatigue testing machine according to claim 1, characterized in that: Support frames (10) are symmetrically and fixedly connected to both sides of the main frame body (1). Rotating rods (11) are symmetrically hinged to the top end and the bottom end of the support frame (10). Wooden wheels (12) are symmetrically fixedly connected to both ends of the rotating rod (11). One end of the pulley (3) passes through the two wooden wheels (12) in sequence and forms a V-shaped structure.

6. The hose fatigue testing machine according to claim 1, characterized in that: The material of the main frame body (1) is set as aluminum profile. The shape of the weight (6) is set as a cylindrical structure. The material of the weight (6) is set as cast iron.

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