Protective fixture tensile test equipment for railway construction

Abstract

The utility model provides a protective fixture tensile test device for railway construction, which relates to the field of static tests and comprises a support frame and a tensile device, and a fixing beam is fixedly mounted at the top of the support frame and used for fixing a protective fixture; during a test, the top end of the stretching device is connected with the protective fixture; the stretching device is vertically arranged under the fixing beam and used for providing vertically-downward pulling force. Or the stretching device is obliquely arranged below the fixed beam and is used for providing obliquely downward pulling force. According to the utility model, the installation state of the stretching device is adjusted, so that the normal state and the stress state of the protection fixture during falling can be simulated, the mechanical properties of the protection fixture in different stress states can be tested, and the safety and reliability of the protection fixture are improved.

Description

Technical Field

[0001] The utility model belongs to the field of static tests, in particular to a protective clamp tensile test device for railway construction. Background Art

[0002] Tensile test is a test method to determine the properties of materials under axial tensile load. This test is essential for understanding the mechanical properties of materials and determining their applicability. The main purpose of tensile test is to determine a series of strength and plasticity indicators of materials, such as elastic limit, elongation, elastic modulus, proportional limit, area reduction, tensile strength, yield point, yield strength, etc. Through these data, the performance of the material can be fully evaluated.

[0003] During the construction of railway bridge sections, workers need to use safety belts for protection when working on the edge of the bridge. A special protective clamp for fixing the safety belt has been designed. To ensure the reliability of the protective clamp, a tensile test is required to test the mechanical properties of the protective clamp before it is put into use. However, the prior art lacks tensile test equipment suitable for the above-mentioned new protective clamp. Utility Model Content

[0004] In view of this, the utility model aims to provide a protective fixture tensile test equipment for railway construction to solve the above technical problems.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A protective fixture tensile test device for railway construction, comprising a support frame and a tensile device, wherein a fixed beam is fixed on the top of the support frame for fixing the protective fixture; during the test, the top of the tensile device is connected to the protective fixture;

[0007] The stretching device is vertically arranged directly below the fixed beam and is used to provide a vertical downward pulling force;

[0008] Alternatively, the stretching device is obliquely arranged below the fixed beam to provide a downwardly inclined pulling force.

[0009] Furthermore, the stretching device includes a stretching cylinder, an upper connecting piece, a lower connecting piece and a tension sensor, wherein the stretching cylinder is installed on the support frame below the fixed beam; the output end of the stretching cylinder is hinged to the bottom end of the lower connecting piece, and the top end of the lower connecting piece is connected to the tension ring at the bottom of the tension sensor; the tension ring at the top of the tension sensor is connected to the bottom end of the upper connecting piece; during the test, the top end of the upper connecting piece is connected to the connecting ear of the protective fixture.

[0010] Furthermore, a pneumatic control valve, a tension regulator and a tension display are installed on the support frame; the tension regulator is used to adjust the tension provided by the stretching device.

[0011] Furthermore, the upper connecting member and the lower connecting member are ring-shaped connecting ropes.

[0012] Furthermore, a connecting portion is fixedly mounted on the output end of the stretching cylinder, and the lower connecting piece is hingedly connected to the connecting portion.

[0013] Furthermore, the connecting part includes a bottom plate and a pair of side plates, the bottom plate is fixedly mounted together with the output end of the stretching cylinder; the side plates are symmetrically formed on both sides of the bottom plate, and a hinge shaft is fixedly mounted between the side plates; the bottom end of the lower connecting piece is sleeved together with the hinge shaft.

[0014] Furthermore, the support frame includes a base frame and support beams, the support beams are symmetrically fixed on both sides of the base frame, and the horizontally arranged fixed beam is fixed between the top ends of the two support beams.

[0015] Furthermore, inclined reinforcement beams are symmetrically arranged on both sides of the support beam; the bottom end of the reinforcement beam is fixedly connected to one side of the base frame, and the top end is fixedly connected to the middle part of the support beam.

[0016] Furthermore, the base frame includes a rectangular frame, a first mounting beam and a second mounting beam, wherein the first mounting beam and the second mounting beam are fixedly mounted in the rectangular frame; the first mounting beam and the second mounting beam are both parallel to the fixed beam;

[0017] The first mounting beam is disposed directly below the fixed beam;

[0018] The second mounting beam is disposed behind the first mounting beam;

[0019] The first mounting beam and the second mounting beam are both fixedly mounted with a cylinder base for mounting the stretching cylinder.

[0020] Furthermore, the cylinder base includes a fixing plate and a lower connecting protrusion, and the top surface of the fixing plate is provided with the lower connecting protrusion;

[0021] A pair of upper connecting protrusions are formed at the bottom of the stretching cylinder;

[0022] The lower connecting protrusion is clamped between the two upper connecting protrusions; the lower connecting protrusion and the upper connecting protrusion are formed with corresponding threaded holes, and the lower connecting protrusion and the upper connecting protrusion are fixed together by bolts.

[0023] Compared with the prior art, the protective clamp tensile test equipment for railway construction described in the utility model has the following beneficial effects:

[0024] The utility model provides a tensile testing device for protective clamps for railway construction. By adjusting the installation state of the tensile device, the normal state of the protective clamp and the stress state when falling can be simulated. It can be used to test the mechanical properties of the protective clamp under different stress states, thereby improving the safety and reliability of the protective clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0026] Figure 1 This is a schematic diagram of the structure of the first embodiment of the utility model;

[0027] Figure 2 It is a side view of the first embodiment of the utility model;

[0028] Figure 3 This is a schematic diagram of the structure of the second embodiment of the present utility model;

[0029] Figure 4 It is a side view of the second embodiment of the utility model;

[0030] Figure 5 This is a schematic diagram of the structure of the support frame of the utility model;

[0031] Figure 6 For this utility model Figure 1 A partial enlarged view of the middle A part;

[0032] Figure 7 For this utility model Figure 1 A partial enlarged view of part B in the middle.

[0033] Description of reference numerals:

[0034] 1-support frame; 2-tension display; 3-pneumatic control valve; 4-tension regulator; 5-stretching device; 6-protective fixture; 11-fixed beam; 12-support beam; 13-reinforcement beam; 14-base frame; 15-cylinder base; 51-stretching cylinder; 52-connecting part; 53-lower connecting piece; 54-tension sensor; 55-upper connecting piece; 56-upper connecting protrusion; 141-rectangular frame; 142-first mounting beam; 143-second mounting beam; 151-lower connecting protrusion; 152-fixed plate. DETAILED DESCRIPTION

[0035] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0036] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0038] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0039] The utility model provides a protective fixture tensile test device for railway construction, comprising a support frame 1 and a tensile device 5. A fixed beam 11 is fixed on the top of the support frame 1. During the test, the protective fixture 6 is clamped on the fixed beam 11 for fixing. The tensile device 5 is arranged below the fixed beam 11, and its top end is connected to the connecting ear of the protective fixture 6, so as to provide a downward pulling force to the protective fixture 6.

[0040] The stretching device 5 includes a stretching cylinder 51, a lower connecting piece 53, a tension sensor 54 and an upper connecting piece 55. The stretching cylinder 51 is installed on the support frame 1 below the fixed beam 11; the output end of the stretching cylinder 51 is hinged to the bottom end of the lower connecting piece 53, and the top end of the lower connecting piece 53 is connected to the tension ring at the bottom of the tension sensor 54; the tension ring at the top of the tension sensor 54 is connected to the bottom end of the upper connecting piece 55. During the test, the top end of the upper connecting piece 55 is connected to the connecting ear of the protective fixture 6. Specifically, the upper connecting piece 55 and the lower connecting piece 53 are annular connecting ropes.

[0041] The support frame 1 includes a base frame 14 and a support beam 12. The support beams 12 are symmetrically fixed on both sides of the base frame 14. A horizontally arranged fixed beam 11 is fixed between the top ends of the two support beams 12. Inclined reinforcement beams 13 are symmetrically arranged on both sides of the support beam 12. The bottom end of the reinforcement beam 13 is fixedly connected to one side of the base frame 14, and the top end is fixedly connected to the middle of the support beam 12. The base frame 14 includes a rectangular frame 141, a first mounting beam 142 and a second mounting beam 143. The first mounting beam 142 and the second mounting beam 143 are fixedly installed in the rectangular frame 141. The first mounting beam 142 and the second mounting beam 143 are both parallel to the fixed beam 11. The first mounting beam 142 is arranged directly below the fixed beam 11. The second mounting beam 143 is arranged behind the first mounting beam 142. The first mounting beam 142 and the second mounting beam 143 are both fixedly installed with a cylinder base 15 for installing a stretching cylinder 51.

[0042] A pneumatic control valve 3 and a tension regulator 4 are installed on the support beam 12 on one side of the support frame 1. During the test, the pneumatic control valve 3 is used to control the start and stop of the stretching cylinder 51, and the tension regulator 4 is used to adjust the tension provided by the stretching device 5 to the protective fixture 6. A tension display 2 is installed on the fixed beam 11 of the support frame 1, which can display the numerical value of the force applied to the protective fixture 6 during the test, so that the staff can observe it conveniently. The pneumatic control valve 3, the tension regulator 4 and the tension display 2 are all existing components, and their working principles are not described in detail here.

[0043] Specifically, a connecting portion 52 is fixedly mounted on the output end of the stretching cylinder 51, and a lower connecting member 53 is hingedly connected to the connecting portion 52. The connecting portion 52 includes a bottom plate and a pair of side plates, and the bottom plate is fixedly mounted on the output end of the stretching cylinder 51; side plates are symmetrically formed on both sides of the bottom plate, and a hinge shaft is fixedly mounted between the side plates; and the bottom end of the lower connecting member 53 is sleeved with the hinge shaft.

[0044] Specifically, the cylinder base 15 includes a fixing plate 152 and a lower connecting protrusion 151, and the fixing plate 152 is provided with a lower connecting protrusion 151 on the top surface; a pair of upper connecting protrusions 56 are provided at the bottom of the stretching cylinder 51; the lower connecting protrusion 151 is clamped between the two upper connecting protrusions 56; the lower connecting protrusion 151 and the upper connecting protrusion 56 are provided with corresponding threaded holes, and the lower connecting protrusion 151 and the upper connecting protrusion 56 are fixed together by bolts.

[0045] In a specific embodiment, the stretching device 5 is vertically arranged directly below the fixed beam 11, and the fixed end of the stretching cylinder 51 is fixed together with the cylinder base 15 on the first mounting beam 142. The upper connecting member 55, the tension sensor 54, the lower connecting member 53 and the central axis of the stretching cylinder 51 are located on the same vertical line. During the test, the top of the upper connecting member 55 of the stretching device 5 is connected to the protective fixture 6 to provide a vertical downward pulling force to the protective fixture 6 to simulate the stress state of the protective fixture 6 in a normal state.

[0046] In another specific embodiment, the stretching device 5 is tilted below the fixed beam 11, and the stretching cylinder 51 is fixed at a certain angle on the cylinder base 15 of the second mounting beam 143. The upper connecting member 55, the tension sensor 54, the lower connecting member 53 and the central axis of the stretching cylinder 51 are located on the same inclined straight line, and a downward inclined pulling force is provided to the protective fixture 6 during the test to simulate the stress state of the protective fixture 6 when falling.

[0047] The test method of the utility model is as follows: when testing the performance of the protective fixture 6 under normal stress, the stretching cylinder 51 is installed on the cylinder base 15 of the first mounting beam 142, and the stretching device 5 is set in a vertical state below the protective fixture 6 to provide a vertical downward pulling force to the protective fixture 6; when testing the performance of the protective fixture 6 under stress when falling, the stretching cylinder 51 is installed on the cylinder base 15 of the second mounting beam 143, and the stretching device 5 is set obliquely below the protective fixture 6 to provide an oblique downward pulling force to the protective fixture 6. The pneumatic control valve 3 controls the stretching cylinder 51 to open, and the protective fixture 6 is stretched downward by the connecting rope. The tension sensor 54 detects the force of the protective fixture 6 and displays it on the tension display 2. During the test, the tension regulator 4 can adjust the tension applied by the stretching device 5 on the protective fixture.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A protective fixture tensile test equipment for railway construction, characterized in that: It includes a support frame and a stretching device. The top of the support frame is fixed with a fixed beam for fixing the protective fixture. During the test, the top of the stretching device is connected to the protective fixture. The stretching device is vertically arranged directly below the fixed beam to provide a vertical downward pulling force; or, the stretching device is obliquely arranged below the fixed beam to provide an oblique downward pulling force.

2. The protective fixture tensile test equipment for railway construction according to claim 1, characterized in that: The stretching device includes a stretching cylinder, an upper connecting piece, a lower connecting piece and a tension sensor. The stretching cylinder is installed on the support frame below the fixed beam; the output end of the stretching cylinder is hinged to the bottom end of the lower connecting piece, and the top end of the lower connecting piece is connected to the tension ring at the bottom of the tension sensor; the tension ring at the top of the tension sensor is connected to the bottom end of the upper connecting piece; during the test, the top end of the upper connecting piece is connected to the connecting ear of the protective fixture.

3. The protective fixture tensile test equipment for railway construction according to claim 2, characterized in that: A pneumatic control valve, a tension regulator and a tension display are installed on the support frame; the tension regulator is used to adjust the tension provided by the stretching device.

4. The protective fixture tensile test equipment for railway construction according to claim 2, characterized in that: The upper connecting piece and the lower connecting piece are annular connecting ropes.

5. The protective fixture tensile test equipment for railway construction according to claim 2, characterized in that: A connecting portion is fixedly mounted on the output end of the stretching cylinder, and the lower connecting piece is hingedly connected to the connecting portion.

6. The protective fixture tensile test equipment for railway construction according to claim 5, characterized in that: The connecting part includes a bottom plate and a pair of side plates, the bottom plate is fixedly mounted with the output end of the stretching cylinder; the side plates are symmetrically arranged on both sides of the bottom plate, and a hinge shaft is fixedly mounted between the side plates; the bottom end of the lower connecting piece is sleeved with the hinge shaft.

7. The protective fixture tensile test equipment for railway construction according to claim 5, characterized in that: The support frame comprises a base frame and support beams. The support beams are symmetrically fixed on both sides of the base frame, and the horizontally arranged fixed beam is fixed between the top ends of the two support beams.

8. The protective fixture tensile test equipment for railway construction according to claim 7, characterized in that: Inclined reinforcement beams are symmetrically arranged on both sides of the support beam; the bottom end of the reinforcement beam is fixedly connected to one side of the base frame, and the top end is fixedly connected to the middle part of the support beam.

9. The protective fixture tensile test equipment for railway construction according to claim 7, characterized in that: The base frame includes a rectangular frame, a first mounting beam and a second mounting beam, wherein the first mounting beam and the second mounting beam are fixedly mounted in the rectangular frame; the first mounting beam and the second mounting beam are both parallel to the fixed beam; The first mounting beam is disposed directly below the fixed beam; The second mounting beam is disposed behind the first mounting beam; The first mounting beam and the second mounting beam are both fixedly mounted with a cylinder base for mounting the stretching cylinder.

10. The protective fixture tensile test equipment for railway construction according to claim 9, characterized in that: The cylinder base comprises a fixing plate and a lower connecting protrusion, and the top surface of the fixing plate is provided with the lower connecting protrusion; A pair of upper connecting protrusions are formed at the bottom of the stretching cylinder; The lower connecting protrusion is clamped between the two upper connecting protrusions; the lower connecting protrusion and the upper connecting protrusion are formed with corresponding threaded holes, and the lower connecting protrusion and the upper connecting protrusion are fixed together by bolts.

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