Torsion testing machine

Abstract

The utility model discloses a torsion testing machine. The torsion testing machine comprises a rack, a fixing mechanism, a rotating mechanism and a force conversion mechanism, the rotating mechanism is located on one side of the rack, the force conversion mechanism is located on the other side of the rack, the fixing mechanism is arranged between the rotating mechanism and the force conversion mechanism, and the rotating mechanism, the fixing mechanism and the force conversion mechanism are located on the same straight line; the fixing mechanism comprises a rail, a fixing assembly and a limiting assembly. A track is arranged on the rack, the fixing assembly moves along the track, and a limiting assembly is arranged on the track on one side, close to the force conversion mechanism, of the fixing assembly; the structure of the jaw is improved, a plurality of clamping lines parallel to the wire rod are arranged in the jaw, when the wire rod rotates, friction can be provided for the wire rod more effectively in a larger area, the clamping effect of the clamping block on the wire rod is improved, and the strength application range of the testing machine on the wire rod is widened.

Description

Technical Field

[0001] This application belongs to the field of laboratory equipment, specifically relating to a torsion testing machine. Background Technology

[0002] The wire torsion testing machine is an instrument for testing the torsional properties of various wire materials. Existing wire torsion testing machines have two clamps: a fixed clamp fixed to a track and a rotating clamp driven by a motor. One end of the wire is fixed to the rotating clamp, and the other end passes through the fixed clamp and downwards via a fixed pulley. A weight is fixed to the downward-facing end to provide tension to the wire. However, existing testing machines have the following drawbacks:

[0003] 1. The strength of the clamping parts in existing technologies is generally low. The clamping jaw structure is mostly a "V" shaped opening with inclined textures inside. When testing high-strength metal wires, the jaws cannot effectively fix the wires due to their high hardness.

[0004] 2. There is no limiting mechanism behind the fixed clamp. Since the fixed clamp needs to be subjected to the tension provided by the weight, the conventional limiting mechanism would support the fixed clamp and affect the tension of the weight on the fixed clamp. However, without a limiting mechanism, the tension when the fixed clamp and the wire are fixed together will make the fixed clamp easy to move, which may lead to inaccurate positioning. Furthermore, when the wire breaks during the experiment, since there is no limiting mechanism behind the fixed clamp, the weight will drive the fixed clamp to move rapidly to the end of the track, which poses a significant safety hazard. Utility Model Content

[0005] To address the aforementioned problems, this application proposes a torsion testing machine, which includes a frame, a fixing mechanism, a rotating mechanism, and a force conversion mechanism.

[0006] The rotating mechanism is located on one side of the frame, the force conversion mechanism is located on the other side of the frame, and the fixing mechanism is located between the rotating mechanism and the force conversion mechanism. The rotating mechanism, the fixing mechanism, and the force conversion mechanism are all located on the same straight line.

[0007] One end of the wire is fixed to the rotating mechanism, and the other end of the wire passes through the fixing mechanism and extends to the force conversion mechanism, and hangs down from the force conversion mechanism. A counterweight is fixed to the other end of the wire.

[0008] The fixing mechanism includes a track, a fixing component, and a limiting component; the frame is provided with a track, the fixing component moves along the track, and the fixing component is provided with a limiting component on the track on the side of the fixing component closer to the force conversion mechanism;

[0009] The rotating mechanism comprises a motor and a second positioning member, the second positioning member and the first positioning member have the same structure, the second positioning member clamps one end of the wire, and the motor drives the wire to rotate under the action of the motor;

[0010] The force conversion mechanism comprises a support and a fixed pulley, one end of the support is fixed on the rack and extends away from the fixing mechanism, and the other end is provided with the fixed pulley.

[0011] Further, the limiting assembly comprises a limiting member and a supporting member;

[0012] The limiting member is connected with the track and can be fixed on the track, and the limiting member limits the fixing mechanism;

[0013] The supporting member is connected with the limiting member, the supporting member abuts against the fixing assembly, and the supporting member can move along the limiting member towards or away from the fixing assembly to adjust the distance between the supporting member and the fixing assembly; the movable supporting member can realize that when the fixing mechanism needs to fix the wire, the supporting member abuts against the rear end of the sliding seat to offset the tension of the counterweight for the fixing mechanism, so that the first positioning member can clamp the wire conveniently, and after clamping, rotating the supporting member to cancel the contact between the supporting member and the sliding seat will not affect the pressure of the counterweight on the fixing mechanism.

[0014] Further, the limiting member comprises an upper limiting block, a lower limiting block and a connecting bolt, the upper limiting block and the lower limiting block are oppositely arranged and sleeved on the track, the upper limiting block and the lower limiting block are connected by the connecting bolt, the connecting bolt rotates to drive the upper limiting block and the lower limiting block to approach each other, and the rotation of the bolt can fix the limiting member on the track or separate the limiting member from the track.

[0015] Further, the supporting member comprises a protruding part and a handle, the protruding part is connected with the limiting member, and the handle and the protruding part are integrally formed, and the size of the protruding part is the distance limited by the limiting member.

[0016] Alternatively, the limiting member comprises an upper limiting block, a lower limiting block and a pull rod; the upper limiting block and the lower limiting block are oppositely arranged and sleeved on the track, and the upper limiting block and the lower limiting block are connected by the pull rod, the top of the pull rod is hinged with a buckle, which is similar to the switch at the upper end of a water valve, and the buckle can be rotated by 90° to lift the pull rod, so as to fix the upper limiting block and the lower limiting block, and then reset to make the pull rod descend and separate the upper limiting block and the lower limiting block.

[0017] Alternatively, the supporting member comprises an insertion block, the insertion block is in the shape of “L”, and the upper surface of the limiting member is provided with a plurality of arrayed insertion holes, one end of the insertion block is connected with the insertion hole.

[0018] Further, the fixing assembly comprises a first positioning member and a sliding seat, the sliding seat is connected with the track and slides along the track, the track is provided with a scale, and the first positioning member is fixed on the sliding seat;

[0019] The first positioning member comprises a clamping block, a clamping seat and a fastener, the fastener is connected with the clamping block, the fastener is fixed to the clamping seat, and the fastener controls the opening and closing of the clamping block through radial screwing movement along the clamping seat.

[0020] Further, the two clamping blocks are oppositely arranged, and the opposite surface of the clamping block is provided with a jaw for clamping the wire.

[0021] Further, the fastener comprises a fastening bolt, one end of the fastening bolt abuts against the clamping block, the fastening bolt is fixed to the clamping seat, and the fastening bolt pushes the clamping block to clamp through radial rotation to the clamping seat.

[0022] Further, the jaw is arranged through the clamping block, the cross section of the jaw is semicircular, and the inner surface of the jaw is provided with clamping lines parallel to the axis direction of the clamping seat.

[0023] Preferably, the jaw is a high-strength jaw.

[0024] The utility model discloses the beneficial effects are:

[0025] (1) the structure of the jaw is improved, a plurality of clamping lines parallel to the wire are arranged in the jaw, when the wire rotates, the wire can be provided with more effective friction in a larger area, the clamping effect of the clamping block on the wire is improved, and the strength application range of the testing machine on the wire is improved.

[0026] (2) the limiting mechanism is arranged behind the sliding seat, when the fixing mechanism needs to fix the wire, the supporting piece is abutted against the rear end of the sliding seat to offset the tension of the counterweight piece of the fixing mechanism, the first positioning member is convenient for clamping the wire, after clamping is completed, rotating the supporting piece cancels the contact between the supporting piece and the sliding seat, so that the pressure of the counterweight piece on the fixing mechanism is not affected, and when the wire breaks, the sliding seat only moves a very small distance and is blocked by the limiting piece, so that the safety factor is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0027] The drawings described herein are used to provide further understanding of the present application, and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation on the present application.

[0028] Figure 1 It is a whole structure schematic view of the utility model embodiment;

[0029] Figure 2 It is a fixing mechanism structure schematic view of the utility model embodiment;

[0030] Figure 3 It is a fixing assembly structure schematic view of the utility model embodiment;

[0031] Figure 4 It is a clamping block structure schematic view of the utility model embodiment;

[0032] Figure 5 It is the schematic view when the limiting piece and the sliding seat of the embodiment of the utility model abut against each other;

[0033] Figure 6 It is the schematic view when the limiting piece fixing seat and the sliding seat of the embodiment of the utility model do not contact each other;

[0034] Figure 7 It is the schematic view of the support piece structure of another embodiment of the utility model;

[0035] Figure 8 It is the schematic view of the pull rod structure of another embodiment of the utility model;

[0036] In the drawing: 1- frame, 2- fixing mechanism, 21- track, 22- limiting assembly, 221- support piece, 222- limiting piece, 2221- connecting bolt, 2222- pull rod, 23- fixing assembly, 231- first positioning piece, 2310- clamping seat, 2311- clamping block, 2312- fastener, 2313- jaw, 2314- clamping thread, 232- sliding seat, 3- rotating mechanism, 31- second positioning piece, 4- force conversion mechanism. DETAILED DESCRIPTION

[0037] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail with reference to the accompanying drawings.

[0038] In the following description, a lot of specific details are set forth in order to fully understand the present application, but the present application can also be implemented in other ways different from the description herein, therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0039] In addition, in the description of the present application, it is understood that the orientation or positional relationship indicated by the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0040] In the present application, unless specifically defined and limited otherwise, the terms "mounting", "connected", "connection", "fixed", and the like should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection, and can also be communication; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] In the present application, unless specifically defined and limited otherwise, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples.

[0042] As shown in Figures 1-7 A torsion testing machine, the torsion testing machine comprises a rack 1, a fixing mechanism 2, a rotating mechanism 3 and a force conversion mechanism 4;

[0043] The rotating mechanism 3 is located on one side of the rack 1, the force conversion mechanism 4 is located on the other side of the rack 1, the fixing mechanism 2 is arranged between the rotating mechanism 3 and the force conversion mechanism 4, and the rotating mechanism 3, the fixing mechanism 2 and the force conversion mechanism 4 are located on the same straight line;

[0044] One end of the wire is fixed to the rotating mechanism 3, the other end of the wire extends to the force conversion mechanism 4 through the fixing mechanism 2 and hangs down from the force conversion mechanism 4, and the other end of the wire is fixed to a counterweight, which is preferably a weight;

[0045] The fixing mechanism 2 comprises a track 21, a fixing assembly 23 and a limiting assembly 22; the track 21 is arranged on the rack 1, the fixing assembly 23 moves along the track 21, and the limiting assembly 22 is arranged on the track 21 close to the side of the fixing assembly 23 near the force conversion mechanism 4;

[0046] The rotating mechanism 3 comprises a motor and a second positioning member 31, the second positioning member 31 and the first positioning member 231 have the same structure, the second positioning member 31 clamps one end of the wire, and drives the wire to rotate under the action of the motor;

[0047] The force conversion mechanism 4 comprises a support and a fixed pulley, one end of the support is fixed on the frame 1 and extends away from the fixing mechanism 2, and the other end is provided with the fixed pulley.

[0048] In one embodiment, as shown in Figures 5-6 The limiting component 222 and the support 221 are connected, the support 221 abuts against the fixing component 23, and the support 221 can move along the limiting component 222 towards or away from the fixing component 23 to adjust the distance between the support 221 and the fixing component 23.

[0049] The limiting component 222 is connected with and can be fixed on the track 21, and the limiting component 222 limits the fixing mechanism 2.

[0050] The limiting component 222 is connected with and can be fixed on the track 21, and the limiting component 222 limits the fixing mechanism 2.

[0051] In one embodiment, as shown in Figures 5-6 The limiting component 222 comprises an upper limiting block, a lower limiting block and a connecting bolt 2221, the upper limiting block and the lower limiting block are oppositely arranged and sleeved on the track 21, and the connecting bolt 2221 is connected between the upper limiting block and the lower limiting block, the connecting bolt 2221 is rotated to drive the upper limiting block and the lower limiting block to approach each other, and the rotation of the bolt can fix or detach the limiting component 222 from the track 21.

[0052] In one embodiment, as shown in Figures 5-6 The support 221 comprises a protruding portion and a handle, the protruding portion is rotationally connected with the limiting component 222, and the handle and the protruding portion are integrally formed, and the size of the protruding portion is the distance limited by the limiting component 222.

[0053] In another embodiment, as shown in Figure 8 The limiting component 222 comprises an upper limiting block, a lower limiting block and a pull rod 2222, the upper limiting block and the lower limiting block are oppositely arranged and sleeved on the track 21, and the pull rod 2222 is connected between the upper limiting block and the lower limiting block, the top of the pull rod 2222 is hinged with a buckle, which is similar to the switch at the upper end of a water valve, the buckle is rotated by 90° to lift the pull rod 2222, and then the upper limiting block and the lower limiting block are fixed, and after resetting, the pull rod 2222 is lowered to separate the upper limiting block and the lower limiting block.

[0054] In another embodiment, as shown in Figure 7As shown, the support 221 comprises an insertion block in the shape of an "L", and the upper surface of the limiting member 222 is provided with a plurality of insertion holes arranged in an array. One end of the insertion block is connected to the insertion hole.

[0055] In one embodiment, as shown in Figures 2-3 The fixing assembly 23 comprises a first positioning member 231 and a sliding seat 232. The sliding seat 232 is connected to and slides along the track 21. The track 21 is provided with a scale. The first positioning member 231 is fixed to the sliding seat 232.

[0056] The first positioning member 231 comprises a clamping block 2311, a clamping seat 2310, and a fastener 2312. The fastener 2312 is connected to the clamping block 2311 and fixed to the clamping seat 2310. The fastener 2312 is radially screwed along the clamping seat 2310 to control the opening and closing of the clamping block 2311.

[0057] In one embodiment, as shown in Figure 3 The two clamping blocks 2311 are oppositely arranged. The opposite surfaces of the clamping blocks 2311 are provided with jaws 2313 for clamping the wire.

[0058] In one embodiment, as shown in Figure 3 The fastener 2312 comprises a fastening bolt. One end of the fastening bolt abuts against the clamping block 2311. The fastening bolt is fixed to the clamping seat 2310 and radially rotated to push the clamping block 2311 to clamp.

[0059] In one embodiment, as shown in Figure 4 The jaws 2313 are arranged through the clamping block 2311. The cross section of the jaws 2313 is semicircular. The inner surface of the jaws 2313 is provided with clamping grooves 2314 parallel to the axis direction of the clamping seat 2310.

[0060] In one embodiment, the jaws 2313 are high-strength jaws 2313.

[0061] The wire is clamped by the second positioning member 31 at one end, and extends through the first positioning member 231 to the fixed pulley of the force conversion mechanism 4, and is connected with a counterweight at the fixed pulley, the counterweight provides a pulling force to straighten the wire, at this time, according to the pre-selected experimental size, the sliding seat 232 is slid along the scale of the track 21 to the corresponding position, at this time, the limiting mechanism is fixed behind the sliding seat 232, at this time, the protruding portion of the supporting member 221 is turned to the front, and the protruding portion abuts against the sliding seat 232 to offset the pulling force of the wire, so that the pulling force cannot affect the wire fixed by the first positioning member 231, according to the scale, the corresponding position of the wire is connected with the clamping block 2311, the fastener 2312 is screwed, the clamping block 2311 and the wire are connected tightly, then the supporting member 221 is turned, so that the protruding portion is not in contact with the supporting seat, at this time, the sliding seat 232 receives the pulling force of the wire again, the motor is started to start the test, after the wire is broken, the pulling force pulls the sliding seat 232 to slide backward, and then the sliding seat 232 is in contact with the limiting mechanism and stops sliding backward, so that the safety factor is improved.

[0062] The places not described in the application can be realized by using or referring to the existing technology.

[0063] Each embodiment in the specification is described in a progressive manner, and the same or similar parts between each embodiment can be referred to each other, and each embodiment mainly describes the difference from other embodiments.

[0064] The above only describes the embodiments of the application and is not used to limit the application. The application can have various changes and modifications for those skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the application shall be included in the scope of claims of the application.

Claims

1. A torsion testing machine, characterized in that, The torsion testing machine includes a frame, a fixing mechanism, a rotating mechanism, and a force conversion mechanism; The rotating mechanism is located on one side of the frame, the force conversion mechanism is located on the other side of the frame, the fixing mechanism is located between the rotating mechanism and the force conversion mechanism, and the rotating mechanism, the fixing mechanism, and the force conversion mechanism are located on the same straight line; The fixing mechanism includes a track, a fixing component, and a limiting component; the frame is provided with the track, the fixing component moves along the track, and the fixing component is provided with a limiting component on the track on the side of the track near the force conversion mechanism.

2. The torsion testing machine according to claim 1, characterized in that, The limiting component includes a limiting member and a supporting member; The limiting member is connected to the track and can be fixed to the track; The support member is connected to the limiting member, and the support member abuts against the fixing component. The support member can move along the limiting member towards or away from the fixing component to adjust the distance between it and the fixing component.

3. A torsion testing machine according to claim 2, characterized in that, The limiting component includes an upper limiting block, a lower limiting block, and a connecting bolt. The upper limiting block and the lower limiting block are disposed opposite to each other on the track. The upper limiting block and the lower limiting block are connected by the connecting bolt. The rotation of the connecting bolt causes the upper limiting block and the lower limiting block to move closer together.

4. A torsion testing machine according to claim 2, characterized in that, The support member includes a protrusion and a handle, the protrusion is connected to the limiting member, and the handle and the protrusion are integrally formed.

5. A torsion testing machine according to claim 2, characterized in that, The limiting component includes an upper limiting block, a lower limiting block, and a lifting rod; the upper limiting block and the lower limiting block are respectively disposed on the track, and the upper limiting block and the lower limiting block are connected by the lifting rod, and the top of the lifting rod is hinged with a buckle.

6. A torsion testing machine according to claim 2, characterized in that, The support includes an insert block, which is L-shaped. The upper surface of the limiting member is provided with a plurality of arrayed insertion holes, and one end of the insert block is connected to the insertion holes.

7. A torsion testing machine according to claim 1, characterized in that, The fixing component includes a first positioning element and a sliding seat, the sliding seat is connected to the track, and the first positioning element is fixed to the sliding seat; The first positioning element includes a clamping block, a clamping seat, and a fastener. The fastener is connected to the clamping block and fixed to the clamping seat. The fastener moves radially and helically along the clamping seat to control the opening and closing of the clamping block.

8. A torsion testing machine according to claim 7, characterized in that, The two clamping blocks are arranged opposite each other, and the opposite surfaces of the clamping blocks are provided with jaws for clamping the wire.

9. A torsion testing machine according to claim 8, characterized in that, The fastener includes a fastening bolt, one end of which abuts against the clamping block. The fastening bolt is fixed to the clamping seat, and the fastening bolt rotates radially toward the clamping seat to push the clamping block to clamp.

10. A torsion testing machine according to claim 8, characterized in that, The jaws extend through the clamping block, and the cross-section of the jaws is semi-circular. The inner surface of the jaws is provided with clamping grooves parallel to the axis of the clamping seat.

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