Rubber tensile machine with protection function

Abstract

The utility model discloses a rubber tensile machine with a protection function, which relates to the technical field of rubber production experiment equipment and comprises a base, a pair of upright posts and an upper cross beam, a protection cylinder is slidably arranged on the outer side of the pair of upright posts above the base, sliding rails are fixedly arranged on the front wall surfaces of the upright posts, and sliding blocks are slidably arranged on the sliding rails. A guide wheel capable of freely rotating is arranged below the upper cross beam, a connecting rope is wound on the guide wheel, one end of the connecting rope is fixedly connected with one side of the sliding block, the other end of the connecting rope is fixedly connected with the protective cylinder, a shifting rod is fixedly arranged on the front wall face of the lifting beam, and the sliding block can be pressed downwards through the shifting rod; when the lifting beam descends to the height of a rubber product to be installed, a gap facilitating installation of the rubber product on the clamping head can be automatically reserved between the protection barrel and the base, and before the lifting beam ascends to the limit of the stretched length of the rubber product, the protection barrel can completely fall on the base, so that the rubber product is prevented from being damaged. And the rubber product can be blocked by the protective cylinder if being broken and flies out.

Description

Technical Field

[0001] This utility model relates to the technical field of rubber production experimental equipment, specifically a rubber tensile testing machine with protective functions. Background Technology

[0002] During the production and processing of rubber products, tensile tests are usually required to ensure the strength of the rubber itself. A rubber tensile testing machine is used to deform the rubber shock absorber, and the presence of cracks or fractures on the surface is used to determine whether the rubber product meets the production standards.

[0003] For example, utility model patent CN221038417U discloses a rubber tensile testing machine, comprising: a sliding base with a guide rail; a first base fitted on the guide rail; a first mounting plate on the first base; a lower chuck on the end face of the first mounting plate, with a first lead screw on the lower chuck, the lower end of the first lead screw connected to a drive motor fixed below the lower chuck, and the upper end of the first lead screw extending upward through the lower chuck; an upper chuck threadedly connected to the lead screw; a second lead screw parallel to the first lead screw on the lower chuck; two sprockets fixedly mounted on the two lead screws; and a chain fitted on the two sprockets.

[0004] However, existing rubber tensile testing machines do not have protective functions. When the rubber is broken, it can easily fly out and injure nearby workers. Therefore, providing a rubber tensile testing machine with protective functions is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a rubber tensile testing machine with protective functions to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rubber tensile testing machine with protective function, comprising a base, a pair of columns, an upper crossbeam, and a lifting beam. A protective cylinder is slidably disposed above the base on the outside of the pair of columns. A slide rail is fixedly disposed on the front wall of the columns, and a slider is slidably disposed on the slide rail. A freely rotatable guide wheel is disposed below the upper crossbeam, and a connecting rope is wound around the guide wheel. One end of the connecting rope is fixedly connected to one side of the slider, and the other end of the connecting rope is fixedly connected to the protective cylinder. A lever is fixedly disposed on the front wall of the lifting beam. When the lifting beam descends, the lever can press down on the other side of the slider to lower it.

[0007] Preferably, the inner side of the protective cylinder is provided with two pairs of freely rotating pulleys via a wheel frame, and the two pairs of pulleys are in contact with the outer surfaces of a pair of columns.

[0008] Preferably, a pair of limiting strips are fixedly provided on the outer surface of each pair of columns, and the spacing between the pair of limiting strips matches the width of the pulley.

[0009] Preferably, a buffer ring is fixedly provided on the lower end face of the protective cylinder.

[0010] Preferably, the protective cylinder is made of a transparent material.

[0011] This utility model provides a rubber tensile testing machine with protective function, which has the following beneficial effects: This device controls the height of the protective cylinder through a lifting beam, so that the protective cylinder can be driven without the need for other power sources. When the lifting beam descends to the height of the rubber product to be installed, the protective cylinder can automatically leave a gap between itself and the base to facilitate the installation of the rubber product on the clamp. Before the lifting beam rises to the limit of the rubber product's stretched length, the protective cylinder can be completely placed on the base. At this time, if the rubber product breaks and flies out, it can be blocked by the protective cylinder, thus playing a protective role. Attached Figure Description

[0012] Figure 1 This is a diagram showing the state of the protective cylinder after it has descended in this utility model.

[0013] Figure 2 This is a diagram showing the protective cylinder after it has been raised in this utility model.

[0014] Figure 3 This is a top view of the pulley.

[0015] In the diagram: 1. Base; 2. Column; 3. Upper crossbeam; 4. Lifting beam; 5. Protective cylinder; 6. Slide rail; 7. Slider; 8. Guide wheel; 9. Connecting rope; 10. Lever; 11. Limiting strip; 12. Wheel frame; 13. Pulley; 14. Buffer ring. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0017] Please see Figure 1-3This utility model provides a technical solution: a rubber tensile testing machine with protective function, including a base 1, a pair of columns 2, an upper crossbeam 3, and a lifting beam 4. A protective cylinder 5 is slidably arranged above the base 1 on the outside of the pair of columns 2. A slide rail 6 is fixedly arranged on the front wall of the columns 2, and a slider 7 is slidably arranged on the slide rail 6. The slide rail 6 can restrict the slider 7 from sliding in the vertical direction. A guide wheel 8 that can rotate freely is arranged below the upper crossbeam 3. A connecting rope 9 is wound on the guide wheel 8. One end of the connecting rope 9 is fixedly connected to one side of the slider 7, and the other end of the connecting rope 9 is fixedly connected to the protective cylinder 5. A lever 10 is fixedly arranged on the front wall of the lifting beam 4. When the lifting beam 4 descends, the lever 10 can press down on the other side of the slider 7 to make it descend. When the slider 7 descends, it can pull the connecting rope 9. The guide wheel 8 changes the direction of force and can pull the protective cylinder 5 upward. When the lifting beam 4 moves to the top, the lever 10 can separate from the slider 7.

[0018] As an embodiment of this utility model, the inner side of the protective cylinder 5 is provided with two pairs of freely rotating pulleys 13 through the wheel frame 12. The two pairs of pulleys 13 are in contact with the outer surface of a pair of columns 2, and the sliding trajectory of the protective cylinder 5 is limited by the pulleys 13.

[0019] As an embodiment of this utility model, a pair of limiting strips 11 are fixedly provided on the outer surface of each pair of columns 2. The distance between the pair of limiting strips 11 matches the width of the pulley 13. The pair of limiting strips 11 can prevent the pulley 13 from moving in the front-back direction of the column 2.

[0020] As an embodiment of this utility model, a buffer ring 14 is fixedly provided on the lower end face of the protective cylinder 5. When the protective cylinder 5 comes into contact with the base 1, the buffer ring 14 can buffer it.

[0021] As an embodiment of this utility model, the protective cylinder 5 is made of transparent material, which makes it easy to observe the state of the rubber product when it is stretched.

[0022] The working principle and usage process of this utility model are as follows: When the lifting beam 4 is located at the bottom of a pair of columns 2, the slider 7 can be pressed down. When the slider 7 is pressed down, the protective cylinder 5 can leave the base 1. At this time, a gap can be left between the protective cylinder 5 and the base 1 to facilitate the installation of rubber products on the clamp. At this time, rubber products can be installed on the clamp of the tensile testing machine. During stretching, the lifting beam 4 rises. After the lifting beam 4 rises, the slider 7 loses its constraint and can rise freely. At this time, the protective cylinder 5 can descend and land on the base 1. Before the lifting beam 4 rises to the limit of the stretched length of the rubber product, the protective cylinder 5 can completely land on the base 1. At this time, if the rubber product breaks and flies out, it can be blocked by the protective cylinder 5, thus playing a protective function.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rubber tensile testing machine with protective function, comprising a base (1), a pair of uprights (2), an upper crossbeam (3), and a lifting beam (4), characterized in that, A protective cylinder (5) is slidably disposed above the base (1) on the outside of a pair of columns (2). A slide rail (6) is fixedly disposed on the front wall of the column (2). A slider (7) is slidably disposed on the slide rail (6). A guide wheel (8) that can rotate freely is disposed below the upper crossbeam (3). A connecting rope (9) is wound around the guide wheel (8). One end of the connecting rope (9) is fixedly connected to one side of the slider (7). The other end of the connecting rope (9) is fixedly connected to the protective cylinder (5). A lever (10) is fixedly disposed on the front wall of the lifting beam (4). When the lifting beam (4) descends, the lever (10) can press down on the other side of the slider (7) to make it descend.

2. A rubber tensile testing machine with protective function according to claim 1, characterized in that, The inner side of the protective cylinder (5) is provided with two pairs of freely rotating pulleys (13) through the wheel frame (12), and the two pairs of pulleys (13) are in contact with the outer surface of the pair of columns (2).

3. A rubber tensile testing machine with protective function according to claim 2, characterized in that, A pair of limiting strips (11) are fixedly provided on the outer surface of each pair of columns (2), and the spacing between the pair of limiting strips (11) matches the width of the pulley (13).

4. A rubber tensile testing machine with protective function according to claim 1, characterized in that, A buffer ring (14) is fixedly provided on the lower end face of the protective cylinder (5).

5. A rubber tensile testing machine with protective function according to claim 1, characterized in that, The protective cylinder (5) is made of transparent material.

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