Tension testing device for physiotherapy bed wire

Abstract

The utility model provides a wire rod's tension detection device for physiotherapy bed, including mounting seat, tension detector and mobile control mechanism, the upper end of mounting seat is equipped with tension detector, is provided with mobile control mechanism on mounting seat, its characterized in being that the detection end of tension detector is connected upper chuck, the upper chuck is connected lower chuck on mobile control mechanism, the structure of upper chuck and lower chuck is same, lower chuck is composed of bottom plate, first clamping assembly and second clamping assembly, first clamping assembly is located the top of second clamping assembly and second clamping assembly is installed on bottom plate, the utility model discloses the chuck, which is composed of first clamping assembly and second clamping assembly, when carrying out tension detection to wire rod, the both ends of wire rod are fixed through chuck respectively, and wire rod is fixed and clamped through two sets of clamping assemblies, which greatly enhances the clamping force of wire rod.

Description

Technical Field

[0001] This utility model relates to the field of tensile testing technology for cables used in physiotherapy beds, and in particular to a tensile testing device for cables used in physiotherapy beds. Background Technology

[0002] During use, the surface material of a physiotherapy bed will bear external forces such as the weight of the patient and friction from movement. If the tension of the cables is insufficient, they may suddenly break while the patient is lying down, turning over, or during physiotherapy, leading to bed surface collapse, component detachment, or even accidents such as falls or bumps. Therefore, the cables used in the surface material of a physiotherapy bed need to be screened through tensile testing to select cables that meet fatigue resistance standards, thus avoiding shortening the product's lifespan due to material aging or fatigue breakage.

[0003] Current tensile testing devices typically employ a set of clamps connected to the tensile testing instrument and another set of clamps controlled by a movement control mechanism. Both ends of the wire are secured by these clamps, and the movement control mechanism moves one clamp, stretching the wire to measure its tensile strength. However, the clamps in these current wire tensile testing devices often lack sufficient clamping force, causing the wire to slip or even detach during testing, thus affecting the results. Therefore, optimization and improvement are needed to enhance the clamping force on the wire. Utility Model Content

[0004] In view of the above-mentioned technical problems, this utility model provides a tensile testing device for the wires used in physiotherapy beds. The designed clamp consists of a first clamping component and a second clamping component. The wires are clamped and fixed by the two sets of clamping components, which greatly enhances the clamping force on the wires.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: A tensile testing device for ligatures used in physiotherapy beds includes a mounting base, a tensile testing instrument, and a movement control mechanism. The tensile testing instrument is mounted on the upper end of the mounting base, and the movement control mechanism is provided on the mounting base. The tensile testing instrument's testing end is connected to an upper clamp, and the movement control mechanism is connected to a lower clamp. The upper and lower clamps have the same structure. The lower clamp consists of a base plate, a first clamping assembly, and a second clamping assembly. The first clamping assembly is located above the second clamping assembly, and the second clamping assembly is mounted on the base plate.

[0006] The first clamping assembly includes a clamping frame, clamping plates, a bidirectional lead screw, and a handle. The clamping frame has two sets of clamping plates arranged opposite each other. One side of each set of clamping plates has a connecting block, and the other side has a guide block. The connecting block passes through a square groove on the side wall of the clamping frame and extends out to be threaded onto the bidirectional lead screw. One end of the bidirectional lead screw has a handle. The guide block passes through a guide groove on the side wall of the clamping frame and extends out to be connected to a guide post.

[0007] The inner surfaces of the two sets of clamping plates are provided with anti-slip strips to increase clamping friction.

[0008] The second clamping assembly consists of an adjusting screw, a fixed plate, a movable plate, a limiting block, and side blocks. The fixed plate is fixed to the base plate by bolts. The adjusting screw is threaded into the threaded hole on the fixed plate. The front end of the adjusting screw is connected to the movable plate through a bearing. A limiting block is fixedly provided on the front side of the movable plate. The two side blocks are fixed to the mounting plate, and a limiting groove is formed between the two side blocks.

[0009] Furthermore, the clamping frame is fixedly mounted on the mounting plate, one end of the bidirectional lead screw is mounted on the mounting plate via a bearing, and one end of the guide rod is fixedly mounted on the mounting plate.

[0010] Furthermore, the threads on both sides of the bidirectional lead screw are in opposite directions.

[0011] Furthermore, the upper clamp is installed below the upper limit plate, and the upper end of the upper limit plate is connected to the detection end of the tensile testing instrument.

[0012] Furthermore, the lower clamp is installed above the lower limit plate, and the two ends of the lower limit plate and the upper limit plate are respectively connected and passed through by limit posts, which are installed on the mounting base.

[0013] Furthermore, the movement control mechanism consists of a motor, a lead screw, and a moving block. The lead screw is installed in the moving slot provided on the mounting base through a bearing. One end of the lead screw is connected to the output end of the motor. The moving block is threaded onto the lead screw, and the moving block is fixedly connected to the lower limit plate.

[0014] The beneficial effects of this utility model are: The clamp designed in this utility model consists of a first clamping component and a second clamping component. When testing the tensile strength of the wire, both ends of the wire are fixed by the clamp, and the wire is clamped and fixed by the two sets of clamping components, which greatly enhances the clamping force on the wire.

[0015] The adjusting screw in the second clamping assembly of this utility model causes the limiting block to move, limiting the wire to abut against the limiting groove between the two side blocks. The wire is bent and limited, thereby making the wire and the clamping assembly form multiple points of contact and increasing the clamping strength. The first clamping assembly of this utility model clamps the clamping plates on both sides by operating the first rotary handle to move them toward the limit position. Anti-slip strips are provided on the inner side of the clamping plates to increase contact friction and reduce the possibility of slippage during the tensile test. Attached Figure Description

[0016] Figure 1 This is a front view schematic diagram of the overall structure of the tensile testing device for the wires used in the physiotherapy bed of this utility model; Figure 2 This is a rear view schematic diagram of the overall structure of the tensile testing device for the wires used in the physiotherapy bed of this utility model; Figure 3 This is a schematic diagram of the overall structure of the tensile testing device for the wires used in the physiotherapy bed of this utility model; Figure 4 This is a schematic diagram of section A of the tensile strength testing device for the filament of the physiotherapy bed according to this utility model; Figure 5 This is a schematic diagram of the clamp structure of the tension testing device for the wire used in the physiotherapy bed of this utility model. As shown in the figure: 1. Mounting base, 2. Tensile testing instrument, 31. Motor, 32. Lead screw, 33. Moving block, 41. Upper limit plate, 42. Lower limit plate, 5. Limiting post, 6. Base plate, 71. Adjusting screw, 72. Fixing plate, 73. Moving plate, 74. Limiting insert, 75. Side block, 76. Mounting plate, 81. Clamping frame, 82. Two-way lead screw, 83. Handle, 84. Clamping plate, 841. Anti-slip strip, 85. Connecting block, 86. Guide post, 87. Guide block. Detailed Implementation

[0017] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0018] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0020] Example 1

[0021] As shown in the figure, a tensile testing instrument 2 is mounted on the upper end of the mounting base 1. The testing end of the tensile testing instrument 2 is connected to the upper limit plate 41. An upper clamp is provided at the lower end of the upper limit plate 41. The output end of the tensile testing instrument 2 is connected to the display device through a wire to transmit the tensile testing information to the display device for display. The display device is not shown in the figure because this method is a commonly used technical means.

[0022] Mounting base 1 is equipped with a movement control mechanism that controls the movement of the lower chuck. The lead screw 32 in the movement control mechanism is mounted on the movement slot provided on the mounting base 1 through a bearing. One end of the lead screw 32 is connected to the output end of the motor 31. The lead screw 32 is threadedly connected to the movement block 33. The movement block 33 is fixedly connected to the lower limit plate 42. The lower chuck is provided above the lower limit plate 42. The two ends of the lower limit plate 42 and the upper limit plate 41 are respectively connected and passed through by the limit post 5. The limit post 5 is mounted on the mounting base 1.

[0023] The upper chuck and the lower chuck have the same structure, and the positions of the upper chuck and the lower chuck are opposite to each other. The lower chuck consists of a base plate 6, a first clamping assembly and a second clamping assembly. The first clamping assembly is located above the second clamping assembly and the second clamping assembly is mounted on the base plate 1.

[0024] like Figure 4 and 5The first clamping assembly includes a clamping frame 81, clamping plates 84, a bidirectional lead screw 82, and a handle 83. Two sets of clamping plates 84 are arranged opposite each other inside the clamping frame 81. Anti-slip strips 841 are provided on the inner sides of the two sets of clamping plates 84 to increase clamping friction. A connecting block 85 is provided on one side of the two sets of clamping plates 84, and a guide block 87 is provided on the other side. The connecting block 85 passes through the square groove provided on the side wall of the clamping frame 81 and extends out to be threadedly connected to the bidirectional lead screw 82. The threads on both sides of the bidirectional lead screw 82 are in opposite directions. A handle 83 is provided at one end of the bidirectional lead screw 82. The guide block 87 passes through the guide groove provided on the side wall of the clamping frame 81 and extends out to be connected to the guide post 86.

[0025] The second clamping assembly consists of an adjusting screw 71, a fixed plate 72, a movable plate 73, a limiting block 74, and side blocks 75. The fixed plate 72 is fixed to the base plate 6 by bolts. The adjusting screw 71 is threadedly connected to the threaded hole on the fixed plate 72. The front end of the adjusting screw 71 is connected to the movable plate 73 through a bearing. The limiting block 74 is fixedly provided on the front side of the movable plate 73. The two side blocks 75 are fixed on the mounting plate 76 and a limiting groove is formed between the two side blocks 75.

[0026] Furthermore, the clamping frame 81 is fixedly mounted on the mounting plate 76, one end of the bidirectional lead screw 82 is mounted on the mounting plate 76 via a bearing, and one end of the guide rod 86 is fixedly mounted on the mounting plate 76.

[0027] Example 2

[0028] In using this invention, the material used on the physiotherapy bed is cut into strips to form the wire to be tested. The two ends of the wire are then fixed using upper and lower clamps respectively. During operation, the adjusting screw 71 in the second clamping assembly moves the limiting block 74, positioning the wire against the limiting groove between the two side blocks 75. The wire is bent and restrained, thus creating multi-point contact between the wire and the clamping assembly, increasing the clamping strength. Then, the first handle 83 in the first clamping assembly controls the movement of the clamping plates 84 towards the limiting position to complete the clamping. Anti-slip strips 841 are provided on the inner surface of the clamping plates 84 to increase contact friction and reduce slippage during the tensile test. Two sets of clamping assemblies are used for clamping and fixing, enhancing the clamping force on the wire ends.

[0029] After clamping, the motor 31 is started to control the lower clamp to move away from the upper clamp, so that the wire is stretched. The tensile strength tester 2 detects the value and transmits it to the display device for display.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. The various components mentioned in this utility model are common technologies in the existing field. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A tensile testing device for cables used in physiotherapy beds, comprising a mounting base, a tensile testing instrument, and a movement control mechanism, wherein the tensile testing instrument is mounted on the upper end of the mounting base, and the movement control mechanism is provided on the mounting base, characterized in that... The testing end of the tensile testing instrument is connected to the upper clamp, and the moving control mechanism is connected to the lower clamp. The upper clamp and the lower clamp have the same structure. The lower clamp consists of a base plate, a first clamping component, and a second clamping component. The first clamping component is located above the second clamping component, and the second clamping component is mounted on the base plate.

2. The tensile strength testing device for the filaments used in physiotherapy beds according to claim 1, characterized in that... The first clamping assembly includes a clamping frame, clamping plates, a bidirectional lead screw, and a handle. The clamping frame has two sets of clamping plates arranged opposite each other. One side of each set of clamping plates has a connecting block, and the other side has a guide block. The connecting block passes through a square groove on the side wall of the clamping frame and extends out to be threaded onto the bidirectional lead screw. One end of the bidirectional lead screw has a handle. The guide block passes through a guide groove on the side wall of the clamping frame and extends out to be connected to a guide post.

3. The tensile strength testing device for the ligature wire of the physiotherapy bed according to claim 2, characterized in that... The inner sides of both sets of clamping plates are provided with anti-slip strips.

4. The tensile strength testing device for the filaments used in physiotherapy beds according to claim 1, characterized in that... The second clamping assembly consists of an adjusting screw, a fixed plate, a movable plate, a limiting block, and side blocks. The fixed plate is fixed to the base plate by bolts. The adjusting screw is threaded into the threaded hole on the fixed plate. The front end of the adjusting screw is connected to the movable plate through a bearing. A limiting block is fixedly provided on the front side of the movable plate. The two side blocks are fixed to the mounting plate, and a limiting groove is formed between the two side blocks.

5. The tensile strength testing device for the filaments used in physiotherapy beds according to claim 1, characterized in that... The upper clamp is installed below the upper limit plate, and the upper end of the upper limit plate is connected to the detection end of the tensile testing instrument.

6. The tensile strength testing device for the filaments used in physiotherapy beds according to claim 5, characterized in that... The lower clamp is installed above the lower limit plate. The two ends of the lower limit plate and the upper limit plate are respectively connected and passed through by limit posts, and the limit posts are installed on the mounting base.

7. The tensile strength testing device for the filaments used in physiotherapy beds according to claim 6, characterized in that... The moving control mechanism consists of a motor, a lead screw, and a moving block. The lead screw is installed in the moving slot provided on the mounting base through a bearing. One end of the lead screw is connected to the output end of the motor. The moving block is threadedly connected to the lead screw, and the moving block is fixedly connected to the lower limit plate.

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