Tension device for detecting strength of roller chain

Abstract

The utility model belongs to the technical field of roller chain detection, and particularly relates to a tension device for detecting the strength of a roller chain, which adopts the following scheme that the tension device comprises a workbench, a detection mechanism and a protection mechanism, the detection mechanism and the protection mechanism are mounted on the workbench, and the detection mechanism comprises a motor, a gear I, a lead screw, a gear II, a movable plate, a limiting seat and a pressure sensor. The motor is installed in the middle of the workbench, the first gear is installed at the output end of the motor, and the two second gears are rotationally installed on the workbench through rotating shafts. According to the utility model, the positions of the movable plate and the baffle plate can be conveniently and subsequently adjusted to pick and place the roller chain, so that a better protection effect can be achieved, the roller chain is prevented from being broken, splashing and scratching workers, and the service life reduction caused by different lengths of the roller chain and frequent large stroke of the driving device is reduced.

Description

Technical Field

[0001] This utility model relates to the field of roller chain testing technology, and in particular to a tensile device for testing the strength of roller chains. Background Technology

[0002] Chain drive is a transmission method that uses a roller chain to transmit power from a driving sprocket with a special tooth profile to a driven sprocket. Therefore, it is widely used in the power transmission of locomotives, bicycles, and mechanical equipment.

[0003] During the production process of roller chains, corresponding tensile tests are required to determine whether the roller chains are qualified. However, the lengths of roller chains vary, and frequent adjustments to the stroke for tensile testing and subsequent placement of the roller chains reduce the overall service life. Furthermore, roller chains are usually not protected during the testing process, and if they break, they can easily injure workers. Even if there are protective mechanisms, the adjustment operations are often inconvenient, making it difficult to pick up and put down the roller chains, which affects the efficiency of subsequent inspections. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a tensile testing device for roller chain strength, thereby solving the problems mentioned in the background section.

[0005] A tensile testing device for testing the strength of a roller chain includes a worktable and a testing mechanism and a protective mechanism mounted on the worktable. The testing mechanism includes a motor, a first gear, a lead screw, a second gear, a moving plate, a limiting seat, and a pressure sensor. The motor is mounted in the middle of the worktable. The first gear is mounted at the output end of the motor. There are two second gears, each rotatably mounted on the worktable via a rotating shaft and meshing with the first gear. The lead screw is fixedly mounted on the second gear. The moving plate consists of two opposing gears connected to the lead screw. The limiting seat is inserted into an adjustment hole on the moving plate. The pressure sensor is mounted in an annular groove at the upper end of the limiting seat.

[0006] The protective mechanism includes cylinder one, a movable plate, a baffle, and cylinder two. The movable plate is positioned through a groove in the workbench. Cylinder one consists of two cylinders mounted opposite each other on one side of the workbench and fixedly connected to the upper end of the movable plate via a connecting plate. The baffle extends through the upper end of the movable plate and is fixed to the upper end of the movable plate.

[0007] The output end of cylinder 2 on the moving plate is fixedly connected.

[0008] By adopting the above technical solution, it is convenient to conduct subsequent inspections of the roller chain, reduce the overall length of the device, and save costs and space occupied by the device.

[0009] The baffle is inclined and extends through the upper end of the movable plate.

[0010] By adopting the above technical solution, the roller chain can be protected.

[0011] The movable plate is provided with at least five adjustment holes evenly arranged.

[0012] By adopting the above technical solution, adjustments can be made according to the length of the roller chain, facilitating rapid testing.

[0013] The bottom end of the limiting seat is also provided with a socket into which a limiting pin can be inserted.

[0014] By adopting the above technical solution, the degree of freedom of the seated orientation is limited.

[0015] The baffle has the same tilt angle as the fixed plate, and the upper end of the fixed plate is also tilted.

[0016] By adopting the above technical solution, the roller chain is protected during the testing process.

[0017] The beneficial effects of this utility model of a tensile device for testing the strength of roller chains are:

[0018] The design facilitates subsequent adjustment of the position of the movable plate and baffle for loading and unloading the roller chain, providing better protection and preventing the roller chain from breaking and splashing, which could injure workers. It also allows for quick adjustment based on the length of the roller chain, facilitating subsequent inspection of the roller chain and reducing the need for frequent large-stroke drive devices due to varying roller chain lengths, thus minimizing the lifespan of the drive device. Attached Figure Description

[0019] Figure 1 is a schematic diagram of the overall structure of the tensile device for testing the strength of roller chains proposed in this utility model;

[0020] Figure 2 is a schematic diagram of the testing mechanism of the tensile device for testing the strength of roller chains proposed in this utility model;

[0021] Figure 3 is a schematic diagram of the tension device limiting seat, pressure sensor and limiting pin structure for testing the strength of roller chains proposed in this utility model.

[0022] In the diagram: 1. Workbench; 101. Slide; 2. Fixed plate; 3. Cylinder 1; 4. Movable plate; 5.

[0023] 6. Baffle; 7. Cylinder 2; 8. Motor; 9. Gear 1; 10. Lead screw; 11. Gear 2; 12. Moving plate;

[0024] 1101. Adjustment hole; 12. Limiting seat; 13. Pressure sensor; 14. Limit pin. Detailed Implementation

[0025] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of the present invention.

[0026] Referring to Figures 1-3, a tensile device for testing the strength of a roller chain includes a worktable 1 and a testing mechanism and a protective mechanism mounted on the worktable 1. The testing mechanism includes a motor 7, a first gear 8, a lead screw 9, a second gear 10, a moving plate 11, a limiting seat 12, and a pressure sensor 13. The motor 7 is mounted in the middle of the worktable 1, the first gear 8 is mounted at the output end of the motor 7, the second gear 10 consists of two gears, both of which are rotatably mounted on the worktable 1 via a rotating shaft and mesh with the first gear 8 for transmission, the lead screw 9 is fixedly mounted on the second gear 10, the moving plate 11 consists of two opposing transmission connections to the lead screw 9, the limiting seat 12 is inserted into the adjustment hole 1101 on the moving plate 11, and the pressure sensor 13 is mounted in the annular groove at the upper end of the limiting seat 12.

[0027] The protective mechanism includes cylinder 3, movable plate 4, baffle 5 and cylinder 6. Movable plate 4 is installed through the slide groove 101 of workbench 1. Cylinder 3 consists of two opposing cylinders installed at both ends of one side of workbench 1 and fixedly connected to the upper end of movable plate 4 through connecting plate. Baffle 5 is installed through the upper end of movable plate 4 and fixedly connected to the output end of cylinder 6 fixed on movable plate 4.

[0028] Based on the length of the roller chain, insert the limiting seat 12 into a suitable adjustment hole 1101 on the moving plate 11, and then insert the limiting pin 14 into the bottom of the limiting seat 12 to limit the limiting seat 12; at this time, the roller chain can be placed on the upper end of the limiting seat 12. At this time, the first cylinder 3 can be driven to push the moving plate 4 upward, and the second cylinder 6 can be driven to push the baffle 5, so as to avoid the roller chain breaking and splashing, which may injure the staff during the inspection of the roller chain.

[0029] The drive motor 7 drives the gear 10 via gear 8, which in turn drives the two moving plates 11 to move relative to each other via the lead screw 9. The moving plates 11 then pull the roller chain via the limiting seat 12.

[0030] During the pulling of the roller chain, the data transmitted back by the pressure sensor 13 is observed in real time to detect the strength of the roller chain.

[0031] The baffle 5 is inclined and passes through the upper end of the movable plate 4. The inclination angle of the baffle 5 is the same as that of the fixed plate 2. The upper end of the fixed plate 2 is also inclined. The baffle 5 is adjustable to facilitate subsequent adjustment of the position of the movable plate 4 and the baffle 5 for picking up and putting down the roller chain. It can better play a protective role and prevent the roller chain from breaking and splashing, which could scratch the staff.

[0032] The movable plate 11 has at least five evenly arranged adjustment holes 1101; the limiting seat 12 can be inserted into the appropriate adjustment hole 1101 according to the length of the roller chain, so as to reduce the frequent large stroke drive device due to different roller chain lengths and reduce the service life.

[0033] The bottom end of the limiting seat 12 is also provided with a socket into which a limiting pin 14 can be inserted to restrict the limiting seat 12 to the moving plate 11.

[0034] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A tensile testing device for roller chain strength testing, comprising a worktable (1) and a testing mechanism and a protective mechanism mounted on the worktable (1), characterized in that: The detection mechanism includes a motor (7), a first gear (8), a lead screw (9), a second gear (10), a moving plate (11), a limiting seat (12), and a pressure sensor (13). The motor (7) is installed in the middle of the workbench (1). The first gear (8) is installed at the output end of the motor (7). The second gear (10) consists of two gears that are rotatably mounted on the workbench (1) via a rotating shaft and mesh with the first gear (8). The lead screw (9) is fixedly mounted on the second gear (10). The moving plate (11) consists of two opposing gears connected to the lead screw (9). The limiting seat (12) is inserted into the adjustment hole (1101) on the moving plate (11). The pressure sensor (13) is installed in the annular groove at the upper end of the limiting seat (12). The protective mechanism includes cylinder one (3), movable plate (4), baffle (5) and cylinder two (6). The movable plate (4) is set through the slide groove (101) of the workbench (1). The cylinder one (3) consists of two opposing cylinders installed at both ends of one side of the workbench (1) and fixedly connected to the upper end of the movable plate (4) through a connecting plate. The baffle (5) is set through the upper end of the movable plate (4) and fixedly connected to the output end of cylinder two (6) fixed on the movable plate (4).

2. The tensile testing device for roller chain strength testing according to claim 1, characterized in that: The baffle (5) is inclined and penetrates the upper end of the movable plate (4).

3. The tensile testing device for roller chain strength testing according to claim 2, characterized in that: The movable plate (11) is provided with at least five adjustment holes (1101) evenly arranged on it.

4. The tensile testing device for roller chain strength testing according to claim 3, characterized in that: The bottom end of the limiting seat (12) is also provided with a socket into which a limiting pin (14) can be inserted.

5. The tensile testing device for roller chain strength testing according to claim 4, characterized in that: The inclination angle of the baffle (5) is the same as that of the fixed plate (2), and the upper end of the fixed plate (2) is also inclined.

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