A test clamping fixture and tensile testing equipment

Abstract

This utility model provides a test clamping fixture and a tensile testing device. The test clamping fixture includes a driving component and a fixing assembly for mounting on both sides of a steel wire rope body. The driving component is connected to a driving device. The fixing assembly includes a fixing cylinder, a collet, and a locking component. The collet has several elastic grooves that divide the top of the collet into several elastic segments. The locking component has a guide slope that drives the elastic segments to clamp and limit the steel wire rope body. A locking mechanism is slidably mounted on the fixing cylinder, and the driving component has a driving groove for driving the locking mechanism to move. This utility model solves the problem in the prior art where, under high loads during tensile testing, the steel wire rope is easily loosened due to vibration or stress concentration caused by the single fixing method of clamping the steel wire rope with pressure blocks.

Description

Technical Field

[0001] This utility model relates to the field of wire rope testing technology, specifically a test clamping fixture and tensile testing equipment. Background Technology

[0002] A wire rope is a helical bundle of steel wires that meet the requirements for mechanical properties and geometric dimensions, twisted together according to certain rules. A wire rope consists of steel wires, a core, and lubricant. During the use of wire ropes, monitoring the strength of the wire rope is crucial to prevent the wire rope from exceeding its load-bearing limit and causing a major safety accident. In existing technologies, a pressure-side tension sensor is typically used to measure the tension of a wire rope in order to measure its load. However, during the deformation process of the wire rope, a U-shaped screw and nut are used to compress the wire rope to induce deformation, which is a complex operation. When repeatedly measuring the tension at different locations on the wire rope, the nut needs to be repeatedly removed, resulting in a significant workload. To address the problems in existing technologies, utility model CN221038440U discloses a wire rope safety detection device (hereinafter referred to as Prior Art 1), which includes a pressure-side tension sensor. The pressure-side tension sensor comprises a housing, a placement block, a reinforcing rope groove, and a wire rope tensioning device. The tensioning device includes: a pressure block, disposed at the top of the housing and between two placement blocks, with a pressure groove at the bottom of the pressure block, which, along with two wire rope grooves, can simultaneously engage the wire rope; two threaded rods, including a driving rod and a driven rod, disposed inside the housing, with their top ends threaded through the housing and connected to the pressure block, and their bottom ends rotatably connected to the housing; a driving wheel and a driven wheel, respectively connected to the driving rod and the driven rod; a belt, connected to both the driving wheel and the driven wheel; a drive device, disposed on the housing, for driving the threaded rods to rotate; and a locking device, disposed on the drive device, for locking the drive device; wherein, the pressure block can move upward or downward by rotating the two threaded rods, thereby enabling the measurement of the wire rope tension.

[0003] Existing technology 1 only requires operating the drive device to fix the wire rope without repeatedly disassembling and removing the nut; however, in existing technology 1, when the wire rope is subjected to high loads during tensile testing, the single fixing method of clamping the wire rope with pressure blocks is prone to loosening due to vibration or stress concentration, affecting the accuracy of the test data. Utility Model Content

[0004] The purpose of this utility model is to provide a test clamping fixture and tensile testing equipment, which can solve the problem in the existing technology that when steel wire ropes are subjected to high loads during tensile testing, the single fixing method of clamping the steel wire rope with pressure blocks is prone to loosening due to vibration or stress concentration, thus affecting the accuracy of the test data.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A test clamping fixture includes a drive component and a fixing assembly for mounting on both sides of a steel rope body, the drive component being used to connect to a drive device; The fixing assembly includes a fixing cylinder, a collet, and a locking component. The collet is provided with a plurality of elastic grooves, which are used to divide the top of the collet into a plurality of elastic segments. The locking component is provided with a guide slope, which is used to drive the elastic segments to clamp and limit the steel rope body. A locking mechanism is slidably mounted on the fixed cylinder, and a driving groove is provided on the driving component for driving the locking mechanism to move.

[0006] Preferably, the locking member and the fixing cylinder are detachably connected by threads.

[0007] Preferably, the inner side of the elastic flap is provided with anti-slip protrusions.

[0008] Preferably, the locking mechanism includes a locking pin and a spring, the fixed cylinder is provided with a sliding groove, the locking pin is provided with a stepped platform, and the stepped platform is connected to the sliding groove through the spring.

[0009] Preferably, there are several sliding grooves, which are arranged sequentially from top to bottom on the fixed cylinder.

[0010] Preferably, a first ball groove is provided on the side of the locking pin away from the steel rope body, and a first ball is tumblingly connected in the first ball groove.

[0011] Preferably, a buffer pad is installed inside the drive slot.

[0012] Preferably, the elastic flap is provided with a second ball groove, and a second ball is tumblingly connected in the second ball groove.

[0013] A tensile testing apparatus includes a frame and the aforementioned test clamping fixture; the fixed end of the drive device is connected to the frame, and the telescopic end of the drive device is used to connect to the drive component.

[0014] Compared with the prior art, the present invention has the following beneficial effects: In this invention, after the steel rope body passes through the fixed cylinder, the clamp, and the locking member in sequence, the locking member is installed inside the fixed cylinder. The guide slope on the locking member can move to contact the elastic flap. As the locking member moves into the mounting groove, the elastic flap can clamp the steel rope body under the drive of the guide slope, thereby fixing the steel rope body. After the driving component moves to contact the fixed cylinder under the action of the driving device, the locking mechanism slidably installed on the fixed cylinder can press against the steel rope body under the drive of the driving groove, thereby fixing the steel rope body a second time. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the usage state of this utility model.

[0017] Figure 2 This is a schematic diagram showing the connection relationship between the fixed cylinder and the driving component in this utility model.

[0018] Figure 3 This utility model Figure 1 A magnified view of a portion of point A in the middle.

[0019] Figure 4 This utility model Figure 1 A magnified view of a section at point B.

[0020] The attached diagram lists the components represented by each number as follows: 101-Steel rope body, 102-Driver, 103-Fixing assembly, 104-Fixing cylinder, 105-Clip clamp, 106-Locking component, 107-Elastic flap, 108-Guide ramp, 109-Locking mechanism, 110-Drive groove, 111-Locking pin, 112-Spring, 113-First ball bearing, 114-Second ball bearing, 115-Drive device, 116-Buffer pad. Detailed Implementation

[0021] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0022] In the description of the embodiments of this utility model, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of 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. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0025] In this embodiment of the invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] The following disclosure provides many different implementations or examples for different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0027] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0028] See Figures 1-3 This embodiment discloses a test clamping fixture, including a driving component 102 and a fixing component 103 for mounting on both sides of a steel rope body 101, wherein the driving component 102 is used to connect to a driving device 115. The fixing assembly 103 includes a fixing cylinder 104, a collet 105, and a locking member 106. The collet 105 is provided with a plurality of elastic grooves, which are used to divide the top of the collet 105 into a plurality of elastic petals 107. The locking member 106 is provided with a guide slope 108, which is used to drive the elastic petals 107 to clamp and limit the steel rope body 101. A locking mechanism 109 is slidably mounted on the fixed cylinder 104, and a driving groove 110 for driving the locking mechanism 109 to move is provided on the driving component 102.

[0029] In this embodiment, the fixing component 103 is used to install at both ends of the steel rope body 101; the fixing cylinder 104 is provided with an installation groove, and the bottom end of the collet 105 is fixedly connected to the installation groove; after the steel rope body 101 passes through the fixing cylinder 104, the collet 105 and the locking member 106 in sequence, the locking member 106 is installed into the fixing cylinder 104, and the guide inclined surface 108 provided on the locking member 106 can move to contact the elastic flap 107; as the locking member 106 moves into the installation groove, the elastic flap 107 can clamp the steel rope body 101 under the drive of the guide inclined surface 108, thereby fixing the steel rope body 101; in this embodiment, the locking member 106 is detachably connected to the fixing cylinder 104, thereby facilitating the user to install and disassemble the steel wire rope body. The drive device 115 drives the drive member 102 to move towards the fixing component 103, so that the drive members 102 on both sides of the steel rope body 101 move to cooperate with the fixing component 103, and the steel rope body 101 can be stretched under the drive of the drive device 115; after the drive member 102 moves to contact the fixing cylinder 104 under the action of the drive device 115, the locking mechanism 109 slidably installed on the fixing cylinder 104 can abut against the steel rope body 101 under the drive of the drive groove 110, and perform secondary fixation on the steel rope body 101; through the cooperation of the locking mechanism 109 and the drive groove 110, the steel rope body 101 can be double locked, thereby improving the stability and fixing effect of the connecting component during the steel wire rope body tension test.

[0030] In some embodiments, the locking member 106 is detachably connected to the fixing cylinder 104 via a thread. In this embodiment, rotating the locking member 106 allows it to move towards the collet 105; after the guide slope 108 on the locking member 106 contacts the elastic flap 107, as the locking member 106 moves into the mounting groove, the elastic flap 107 can clamp the steel rope body 101 under the drive of the guide slope 108, thereby fixing the steel rope body 101.

[0031] In some embodiments, an anti-slip protrusion is provided on the inner side of the elastic flap 107. The cross-section of the anti-slip protrusion may be semi-circular, triangular, or polygonal; in this embodiment, the cross-section of the anti-slip protrusion is triangular. By providing the anti-slip protrusion, the frictional force generated between the elastic flap 107 and the steel rope body 101 can be increased, thereby further improving the fixing effect of the elastic flap 107 on the steel rope body 101.

[0032] In some embodiments, the locking mechanism 109 includes a locking pin 111 and a spring 112. A groove is provided on the fixed cylinder 104, and a stepped platform is provided on the locking pin. The stepped platform is connected to the groove via the spring 112. In this embodiment, during the movement of the driving member 102 under the drive of the driving device 115, the driving groove 110 always abuts against the fixed cylinder 104, allowing the driving groove 110 to press the locking pin 111 against the steel rope body 101, thereby providing secondary positioning and fixation for the steel rope body 101. The spring 112 acts as a buffer when the locking pin 111 moves to contact the steel rope body 101. After the detection of the steel rope body is completed, the locking pin 111 resets under the force of the spring 112.

[0033] In some embodiments, a limiting block is provided in the slide. After the stepped platform contacts the limiting block, it can limit the locking pin 111, preventing the spring 112 from failing or being damaged when it is in a compressed state for a long time, and preventing the spring 112 from being over-compressed.

[0034] In some embodiments, there are multiple grooves, which are arranged sequentially from top to bottom on the fixed cylinder 104. When the driving member 102 pushes the locking mechanism 109 to press against the steel rope, the locking mechanisms 109 installed in the multiple grooves can form multiple locking points, distributing the clamping force to different axial positions of the steel rope, avoiding excessive force at a single point that could damage the steel rope or cause locking failure.

[0035] In some embodiments, a first ball groove is provided on the side of the locking pin 111 away from the steel rope body 101, and a first ball 113 is rolled in the first ball groove. In this embodiment, the first ball 113 rolled in the first ball groove can convert the sliding friction between the locking pin 111 and the drive groove 110 into rolling friction, thereby reducing the resistance generated when the drive groove 110 drives the locking pin 111 to move.

[0036] In some embodiments, a buffer pad 116 is installed inside the drive groove 110. In this embodiment, the buffer pad 116 is made of rubber material. By setting the buffer pad 116, the impact force generated when the drive groove 110 collides with the fixed cylinder 104 can be avoided, which would cause damage to the drive component 102 and the fixed cylinder 104.

[0037] In some embodiments, the elastic flap 107 is provided with a second ball groove, and a second ball bearing 114 is rolled within the second ball groove. In this embodiment, the second ball bearing 114 rolled within the second ball groove can convert the sliding friction between the locking member 106 and the elastic flap 107 into rolling friction, reducing the resistance between the elastic flap 107 and the guide inclined surface 108 when the guide inclined surface 108 drives the elastic flap 107 to clamp the steel rope body 101.

[0038] This embodiment also discloses a tensile testing device, including a frame and a test clamping fixture; the fixed end of the drive device 115 is connected to the frame, and the telescopic end of the drive device 115 is used to connect to the drive member 102; the drive device 115 in this embodiment is a conventional hydraulic telescopic device in the prior art; a connecting part is fixedly installed on the drive member 102, and the telescopic end of the drive device 115 is used to connect to the connecting part and drive the drive member 102 to move in the direction of the fixed component 103.

[0039] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A test clamping fixture, characterized by: Includes a drive unit (102) for mounting on both sides of the steel rope body (101) and a fixing assembly (103), the drive unit (102) being used to connect to the drive device (115); The fixing component (103) includes a fixing cylinder (104), a collet (105), and a locking member (106). The collet (105) is provided with a plurality of elastic grooves, which are used to divide the top of the collet (105) into a plurality of elastic petals (107). The locking member (106) is provided with a guide slope (108), which is used to drive the elastic petals (107) to clamp and limit the steel rope body (101). A locking mechanism (109) is slidably mounted on the fixed cylinder (104), and a driving groove (110) for driving the locking mechanism (109) to move is provided on the driving member (102).

2. A test clamping fixture according to claim 1, wherein: The locking member (106) and the fixing cylinder (104) are detachably connected by threads.

3. A test clamping fixture according to claim 1, wherein: The inner side of the elastic flap (107) is provided with anti-slip protrusions.

4. A test clamping fixture according to claim 1, wherein: The locking mechanism (109) includes a locking pin (111) and a spring (112). The fixed cylinder (104) is provided with a sliding groove, and the locking pin (111) is provided with a stepped platform. The stepped platform is connected to the sliding groove through the spring (112).

5. A test clamping fixture according to claim 4, wherein: There are several sliding grooves, which are arranged sequentially from top to bottom on the fixed cylinder (104).

6. A test clamping fixture according to claim 5, wherein: The locking pin (111) is provided with a first ball groove on the side away from the steel rope body (101), and a first ball (113) is rolled in the first ball groove.

7. A test fixture as defined in claim 1, wherein: A buffer pad (116) is installed inside the drive slot (110).

8. A test fixture as defined in claim 1, wherein: The elastic flap (107) is provided with a second ball groove, and a second ball (114) is rolled in the second ball groove.

9. A tensile testing apparatus characterized by, It includes a frame and a test clamping fixture as described in any one of claims 1 to 8; the fixed end of the drive device (115) is connected to the frame, and the telescopic end of the drive device (115) is used to connect to the drive member (102).

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