L-shaped member tensile fixture

Abstract

The utility model discloses a kind of L-shaped piece tensile clamps, including shell assembly, main shaft assembly and clamp body.The shell assembly of the utility model includes clamp shell and pivot, main shaft assembly includes main shaft, connecting table and clamp fixed platform, clamp body includes two pieces of clamp;Pivot is threadedly connected with main shaft, for driving main shaft to move up and down along tensile direction, connecting table is inlayed in the slot of clamp shell, and the shaft body of main shaft is limit connection with connecting table, prevent the deflection when main shaft moves under stress, clamp fixed platform is fixedly connected at the bottom end of main shaft, for driving clamp body to move with main shaft, clamp body is connected with clamp fixed platform, ensure that when main shaft moves along tensile direction in positive direction, clamp body can gradually tighten to fixed experimental piece to prevent loosening and experimental piece is evenly stressed along tensile direction, simultaneously satisfy various thicknesses L-shaped test piece, improve the accuracy and flexibility of L-shaped tensile test piece tensile test.

Description

Technical Field

[0001] This utility model relates to a clamp, specifically an L-shaped tensile clamp, belonging to the field of tensile testing technology. Background Technology

[0002] With the advancement of materials mechanics, L-shaped structures frequently appear in various structures, serving functions such as support and torsion resistance. Therefore, the need to test the mechanical properties of tensile test specimens of L-shaped structures made of different materials has been raised.

[0003] Traditional clamping methods can cause eccentricity and torsion during stretching, leading to deviations in experimental results. Repeated testing significantly increases manpower and material costs, and the design of repeated experiments is not universally applicable, resulting in increased computational workload. In the prior art, CN203292759U discloses an L-shaped metal plate bending positioning clamp. This clamp utilizes an L-shaped metal plate bending component with a symmetrical positioning structure, allowing for easy replacement to a symmetrical position. A welding clamp can be used for clamping and positioning. However, when the existing clamp is fixed and then stretched, eccentricity and torsion occur, causing deviations in experimental results. Repeated testing significantly increases manpower and material costs, and the design of repeated experiments is not universally applicable, resulting in increased computational workload. Utility Model Content

[0004] The purpose of this utility model is to provide an L-shaped tensile clamp to solve at least one of the above-mentioned technical problems, which can have a better fixing and anti-slip effect, and at the same time make the force during tensioning act evenly on the axial direction of the test piece, preventing eccentricity and torsion.

[0005] The present invention achieves the above objectives through the following technical solution: an L-shaped stretching fixture, comprising a housing assembly, a spindle assembly, and a fixture body, wherein the housing assembly comprises a fixture housing and a rotating shaft, the spindle assembly comprises a spindle, a connecting table, and a fixture fixing table, and the fixture body comprises two fixtures.

[0006] The rotating shaft is located above the fixture housing and is threadedly connected to the main shaft. The lower end of the main shaft is movably inserted into the fixture housing, and the rotating shaft is rotatably connected to the upper end of the fixture housing. The connecting platform is fitted into the slot of the fixture housing, and the shaft body of the main shaft is limitedly connected to the connecting platform. The fixture fixing platform is fixedly connected to the bottom end of the main shaft, and the fixture body is connected to the fixture fixing platform.

[0007] As a further improvement of this utility model, the outer shell assembly also includes an upper fixing slot, which is an annular slot, and a threaded ring is provided on the inner side of the upper fixing slot. The upper fixing slot is threadedly connected to the shaft body of the main shaft.

[0008] As a further improvement of this utility model: the fixture housing has a rectangular slot inside, and the connecting platform is fitted into the rectangular slot.

[0009] The connecting table has a rectangular structure with a hole in the middle, through which the spindle shaft can pass. The connecting table fits into the rectangular slot.

[0010] As a further improvement of this utility model: a shaft handle is provided on both sides of the shaft. When the shaft handle drives the shaft to rotate counterclockwise, the main shaft moves in the opposite direction of the stretching direction. When the shaft handle drives the shaft to rotate clockwise, the main shaft moves in the forward direction of the stretching direction.

[0011] As a further improvement of this utility model: the clamp fixing platform is a frustum-shaped structure that is narrow at the top and wide at the bottom, and the clamp fixing platform is fixed to the bottom of the main shaft and the connecting platform by bolts with springs.

[0012] As a further improvement of this utility model: the clamp body is a zig-shaped structure that is wider at the top and narrower at the bottom. The two clamps of the clamp body are the right clamp and the left clamp, the left clamp protrudes in a right-angled L-shape, and the right clamp is concave in an L-shape.

[0013] As a further improvement of this utility model: both clamps of the clamp body are provided with outwardly extending guide rods, and a guide slot is opened inside the clamp shell, with the guide rods embedded in the guide slot.

[0014] As a further improvement of this utility model, the right and left clamps of the clamp body are engraved with anti-slip patterns on their clamping surfaces.

[0015] The beneficial effects of this utility model are as follows: This utility model is provided with a housing assembly, a spindle assembly, and a fixture body. The housing assembly includes a fixture housing and a rotating shaft. The spindle assembly includes a spindle, a connecting platform, and a fixture fixing platform. The fixture body includes two fixtures. The rotating shaft is threadedly connected to the spindle and is used to drive the spindle to move up and down along the tensile direction. The connecting platform is fitted into the slot of the fixture housing, and the spindle shaft is limitedly connected to the connecting platform to prevent the spindle from shifting when it is under force. The fixture fixing platform is fixedly connected to the bottom end of the spindle and is used to drive the fixture body to move with the spindle. The fixture body is connected to the fixture fixing platform to ensure that when the spindle moves in the positive direction of the tensile direction, the fixture body can gradually tighten to fix the test piece to prevent loosening and to ensure that the test piece is evenly stressed along the tensile direction. At the same time, it can meet the requirements of L-shaped test pieces of various thicknesses, improving the accuracy and flexibility of tensile testing of L-shaped tensile pieces. Attached Figure Description

[0016] Figure 1 This is a front view structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the mounting fixture body of this utility model;

[0018] Figure 3 This is a schematic diagram of the fixture body of this utility model holding the test piece;

[0019] Figure 4 These are three views of the fixture body of this utility model;

[0020] In the diagram: 100, spindle; 101, upper fixed bayonet; 102, shaft handle; 103, shaft; 104, fixture housing; 105, connecting platform; 106, fixture fixing platform; 107, guide slot; 108, right fixture; 109, left fixture; 110, guide rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1, as Figures 1 to 4 As shown, an L-shaped stretching fixture includes a housing assembly, a spindle assembly, and a fixture body. The housing assembly includes a fixture housing 104 and a rotating shaft 103. The spindle assembly includes a spindle 100, a connecting table 105, and a fixture fixing table 106. The fixture body includes two fixtures.

[0023] A rotating shaft 103 is disposed above the fixture housing 104 and is threadedly connected to the main shaft 100. It is used to drive the main shaft 100 to move up and down in the tensile direction. The lower end of the main shaft 100 is movably inserted into the fixture housing 104. The rotating shaft 103 is rotatably connected to the upper end of the fixture housing 104. The connecting platform 105 is fitted into the slot of the fixture housing 104, and the shaft of the main shaft 100 is limitedly connected to the connecting platform 105 to prevent the main shaft 100 from shifting when it is subjected to force. The fixture fixing platform 106 is fixedly connected to the bottom end of the main shaft 100 and is used to drive the fixture body to move with the main shaft. The fixture body is connected to the fixture fixing platform 106 to ensure that when the main shaft 100 moves in the forward direction in the tensile direction, the fixture body can gradually tighten to fix the experimental piece.

[0024] Example 2: In addition to all the technical features in Example 1, this example also includes: the outer shell assembly includes an upper fixing slot 101, which is an annular slot and has a threaded ring on its inner side. The upper fixing slot 101 is threadedly connected to the shaft of the spindle 100. After the test piece is installed, the upper fixing slot 101 is screwed down to prevent the fixture from twisting or shifting when subjected to force during the experiment, thus avoiding affecting the experimental results.

[0025] The fixture housing 104 has a rectangular slot inside, and the connecting platform 105 is fitted into the rectangular slot. This prevents the test piece from deviating from the force line when the rotating shaft 103 is rotated for clamping tests and when it is subjected to force during the experiment, so as to avoid affecting the experimental results.

[0026] The connecting platform 105 has a rectangular structure with a hole in the middle. The shaft of the spindle 100 can pass through the connecting platform 105 through the hole. The fitting of the connecting platform 105 with the rectangular slot prevents the spindle 100 from deviating from the force line when the rotating shaft 103 clamps the test piece and when it is subjected to force during the experiment.

[0027] In Example 3, in addition to all the technical features in Example 1, this example also includes: rotating shaft handles 102 are provided on both sides of the rotating shaft 103 to make clamping and disassembling of the specimen faster. When the rotating shaft handles 102 drive the rotating shaft 103 to rotate counterclockwise, the main shaft 100 moves in the opposite direction of the stretching direction. When the rotating shaft handles 102 drive the rotating shaft 103 to rotate clockwise, the main shaft 100 moves in the forward direction of the stretching direction. This allows the main shaft 100 to be adjusted by the meshing connection of the inner and outer threads between the rotating shaft 103 and the main shaft 100 when the rotating shaft 103 rotates.

[0028] The fixture fixing table 106 is a frustum-shaped structure that is narrow at the top and wide at the bottom. The fixture fixing table 106 is fixed to the spindle 100 and the connecting table 105 by bolts with springs. The fixture fixing table 106 facilitates the replacement of the fixture body. The protruding part of the connecting table 105 is fitted with the fixture body to connect and drive the fixture body to move.

[0029] The fixture body has a zigzag structure that is wider at the top and narrower at the bottom. The two clamps of the fixture body are the right clamp 108 and the left clamp 109. The left clamp 109 protrudes in a right-angled L-shape, and the right clamp 108 is concave in an L-shape. When the two are closed, they form an L-shaped clamping mouth. The clamping surface is parallel to the tensile direction. While clamping the specimen, the specimen is subjected to force along the tensile direction. This allows the fixture body to play a better role in fixing and preventing slippage when clamping the L-shaped specimen. At the same time, it ensures that the tensile force is evenly applied in the axial direction of the specimen, preventing eccentricity and torsion.

[0030] Both clamps of the fixture body are provided with extended guide rods 110. The fixture housing 104 has a guide slot 107, and the guide rods 110 are embedded in the guide slot 107. Since the fixture body is connected to the guide slot 107 through the cooperation of the guide rods 110 and the guide slot 107, the main shaft 100 can move in the opposite direction of the stretching direction and the fixture body can gradually tighten to fix the experimental piece when it is subjected to tension during the experiment.

[0031] The right clamp 108 and left clamp 109 of the fixture body are engraved with anti-slip patterns on the clamping surfaces to further prevent slippage during the experiment.

[0032] Working principle: The right clamp 108 protrudes and the left clamp 109 concave to clamp the fixture. The guide rod 110 can be fitted into the guide slot 107. When the fixture body is subjected to force during the experiment, the slot makes the fixture body move obliquely downward while the clamping surface does not shift. At the same time, it tightens evenly to clamp the specimen tighter and tighter. The slot makes the fixture body move upward, achieving a state of clamping the specimen tighter and tighter, which better plays the role of preventing loosening and sliding. The anti-slip pattern on the clamping surface further promotes this effect.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An L-shaped stretching fixture, comprising a housing assembly, a spindle assembly, and a fixture body, characterized in that: The housing assembly includes a clamp housing (104) and a rotating shaft (103); the spindle assembly includes a spindle (100), a connecting platform (105), and a clamp fixing platform (106); and the clamp body includes two clamps. The rotating shaft (103) is located above the fixture housing (104). The rotating shaft (103) is threadedly connected to the main shaft (100). The lower end of the main shaft (100) is movably inserted into the fixture housing (104). The rotating shaft (103) is rotatably connected to the upper end of the fixture housing (104). The connecting platform (105) is fitted into the slot of the fixture housing (104). The shaft of the main shaft (100) is limitedly connected to the connecting platform (105). The fixture fixing platform (106) is fixedly connected to the bottom end of the main shaft (100). The fixture body is connected to the fixture fixing platform (106).

2. The L-shaped stretching fixture according to claim 1, characterized in that: The housing assembly also includes an upper fixing slot (101), which is an annular slot and has a threaded ring on its inner side. The upper fixing slot (101) is threadedly connected to the shaft of the main shaft (100).

3. The L-shaped stretching fixture according to claim 1, characterized in that: The fixture housing (104) has a rectangular slot inside, and the connecting platform (105) is fitted into the rectangular slot. The connecting platform (105) is a rectangular structure with a hole in the middle. The shaft of the main shaft (100) can pass through the connecting platform (105) through the hole. The fitting of the connecting platform (105) with the rectangular slot prevents the main shaft (100) from deviating from the force line when the rotating shaft (103) clamps the test piece and when it is subjected to force during the experiment.

4. The L-shaped stretching fixture according to claim 1, characterized in that: The rotating shaft (103) is provided with rotating shaft handles (102) on both sides. When the rotating shaft handles (102) drive the rotating shaft (103) to rotate counterclockwise, the main shaft (100) moves in the opposite direction along the stretching direction. When the rotating shaft handles (102) drive the rotating shaft (103) to rotate clockwise, the main shaft (100) moves in the forward direction along the stretching direction.

5. The L-shaped stretching fixture according to claim 1, characterized in that: The clamp fixing platform (106) is a frustum-shaped structure that is narrow at the top and wide at the bottom. The clamp fixing platform (106) is fixed to the main shaft (100) and the connecting platform (105) by bolts with springs.

6. The L-shaped stretching fixture according to claim 1, characterized in that: The clamp body is a zig-shaped structure that is wider at the top and narrower at the bottom. The two clamps of the clamp body are a right clamp (108) and a left clamp (109). The left clamp (109) protrudes in a right-angled L-shape, and the right clamp (108) is concave in an L-shape.

7. The L-shaped stretching fixture according to claim 6, characterized in that: Both clamps of the clamp body are provided with outwardly extending guide rods (110), and a guide slot (107) is provided inside the clamp housing (104), and the guide rods (110) are embedded in the guide slots (107).

8. The L-shaped stretching fixture according to claim 7, characterized in that: The right clamp (108) and left clamp (109) of the clamp body are engraved with anti-slip patterns on the clamping surface.

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