Guardrail testing device

Abstract

The utility model discloses a guardrail testing device, which belongs to the technical field of guardrail safety performance detection and comprises a support frame, a first pulley, a second pulley, a pull rope and a dynamometer, the support frame is arranged on one side of a guardrail, the first pulley is rotatably mounted at a first end of the support frame, the second pulley is rotatably mounted at a second end of the support frame, and the pull rope is connected with the dynamometer. The first end of the supporting frame is arranged on the inner side of the guardrail, and the second end of the supporting frame is arranged on the outer side of the guardrail. The first pulley is rotationally connected with the second pulley through a pull rope, the first end of the pull rope is installed on the guardrail, and the second end of the pull rope is arranged on the inner side of the guardrail. And two ends of the dynamometer are respectively connected with the pull rope. The pull rope is pulled on the inner side of the guardrail so that the pull rope can pull the guardrail in the horizontal direction, the tension value borne by the guardrail can be displayed on the dynamometer, and when the tension value reaches a test preset value, external force is cancelled and the guardrail is restored, no obvious deformation is generated on the whole, and it is indicated that the stress performance of the guardrail in the horizontal direction meets the requirement.

Description

Technical Field

[0001] The utility model belongs to the technical field of safety performance detection of guardrails, and particularly relates to a guardrail testing device. Background Art

[0002] A guardrail is a railing for protection. After the guardrail is designed, it is necessary to test its mechanical properties in the horizontal direction and the mechanical properties in the vertical direction. Since the guardrail is a public facility and involves various safety regulations tests, currently, the guardrail needs to go to a special testing center for corresponding tests. In a conventional testing machine, the test object is mostly directly fixed on the cement floor, causing damage to the floor. Therefore, the existing testing method is relatively cumbersome. Summary of the Invention

[0003] The purpose of the utility model is to improve the problem that the existing guardrail cannot be tested on-site or the on-site test is relatively cumbersome, and to provide a guardrail testing device.

[0004] The technical solution for achieving the above purpose includes the following:

[0005] The guardrail testing device includes: a support frame, a first pulley, a second pulley, a pulling rope, and a force measuring device. The support frame is arranged on one side of the guardrail. The first pulley is rotatably installed at the first end of the support frame, and the second pulley is rotatably installed at the second end of the support frame. The first end of the support frame is arranged inside the guardrail, and the second end of the support frame is arranged outside the guardrail.

[0006] Wherein, the first pulley is rotationally connected to the second pulley through the pulling rope. The first end of the pulling rope is installed on the guardrail, and the second end of the pulling rope is arranged inside the guardrail. Both ends of the force measuring device are respectively connected to the pulling rope.

[0007] In one embodiment, the force measuring device is arranged close to the first end of the pulling rope.

[0008] In one embodiment, the testing device further has a loader. The loader is arranged inside the guardrail, and the second end of the pulling rope is connected to the loader.

[0009] In one embodiment, the pulling rope between the first pulley and the second pulley is arranged in the horizontal direction.

[0010] In one embodiment, the testing direction of the force measuring device intersects and is perpendicular to the loading direction of the loader.

[0011] In one embodiment, the support frame includes a first support, a second support, and a third support. The first support and the second support are arranged inside the guardrail and are arranged side by side along the length direction of the guardrail.

[0012] Both ends of the third bracket are respectively installed on the first bracket and the second bracket, and at least part of the third bracket is arranged outside the guardrail.

[0013] In one embodiment, the first bracket includes a first support column, a first cross bar, and two first inclined support columns. The first support column is installed on the first cross bar, and the first support column is perpendicular to the first cross bar.

[0014] The two first inclined support columns are respectively arranged on both sides of the first support column. The first end of the first inclined support column is installed on the first support column, and the second end of the first inclined support column is installed on the first cross bar.

[0015] A triangular support structure is formed among the first inclined support column, the first support column, and the first cross bar.

[0016] In one embodiment, the second bracket includes a second support column, a second cross bar, and two second inclined support columns. The second support column is installed on the second cross bar, and the second support column is perpendicular to the second cross bar.

[0017] The two second inclined support columns are respectively arranged on both sides of the second support column. The first end of the second inclined support column is installed on the second support column, and the second end of the second inclined support column is installed on the second cross bar.

[0018] A triangular support structure is formed among the second inclined support column, the second support column, and the second cross bar.

[0019] In one embodiment, the third bracket includes a first connecting rod, a second connecting rod, a third connecting rod, and a fourth connecting rod. The first end of the first connecting rod is connected to the first end of the second connecting rod. The second end of the first connecting rod is installed on the third connecting rod, and the second end of the second connecting rod is installed on the fourth connecting rod.

[0020] Both ends of the third connecting rod are respectively detachably connected to the first support column and the second support column.

[0021] Both ends of the fourth connecting rod are respectively detachably connected to the first support column and the second support column.

[0022] In one embodiment, there are two first connecting rods and two second connecting rods respectively. The third bracket further has a fifth connecting rod. The two first connecting rods are parallel to each other, and the two second connecting rods are parallel to each other.

[0023] The two first connecting rods or the two second connecting rods are connected by the fifth connecting rod.

[0024] The technical solution provided by the present utility model has the following advantages and effects:

[0025] By setting the first pulley and the second pulley, the force direction of the pulling rope is changed. The first end of the pulling rope is installed on the guardrail, and the second end of the pulling rope is arranged inside the guardrail. By pulling the pulling rope inside the guardrail, the pulling rope pulls the guardrail horizontally, and the guardrail is stretched outwards under the action of an external force. Moreover, both ends of the force measuring device are arranged on the pulling rope. When the pulling rope pulls the guardrail, the force measuring device will display the pulling force value borne by the guardrail. When the pulling force value reaches the test preset value and the external force is cancelled, after the guardrail is restored, there is no obvious deformation on the whole, indicating that the horizontal force-bearing performance of the guardrail meets the requirements. Description of the Drawings

[0026] The drawings here show specific examples of the technical solutions of the present invention and form a part of the description together with the specific embodiments, and are used to explain the technical solutions, principles and effects of the present invention.

[0027] Unless otherwise specified or defined, in different drawings, the same reference numerals represent the same or similar technical features. For the same or similar technical features, different reference numerals may also be used to represent them.

[0028] Figure 1 is a schematic diagram of a guardrail testing device in an embodiment of the present invention;

[0029] Figure 2 is a schematic diagram of a support frame in an embodiment of the present invention;

[0030] Description of the Reference Numerals:

[0031] 100, testing device; 1, support frame; 11, first support; 111, first inclined support column; 112, first support column; 113, first cross bar; 12, second support; 121, second inclined support column; 122, second support column; 123, second cross bar; 13, third support; 131, first connecting rod; 132, second connecting rod; 133, third connecting rod; 134, fourth connecting rod; 135, fifth connecting rod; 2, pulling rope; 3, first pulley; 4, second pulley; 5, force measuring device; 6, guardrail; 7, loader. Detailed Description of the Embodiments

[0032] For the convenience of understanding the present invention, the specific embodiments of the present invention will be described in more detail below with reference to the drawings in the specification.

[0033] Unless otherwise specified or defined, the "first, second..." used herein is only for distinguishing names and does not represent a specific quantity or order.

[0034] Unless otherwise specified or defined, the term "and / or" as used herein includes any and all combinations of one or more of the related listed items.

[0035] It should be noted that when an element is considered to be "fixed to" another element, it can be directly fixed to the other element or there can be an intermediate element; when an element is considered to be "connected to" another element, it can be directly connected to the other element or there can be an intermediate element at the same time; when an element is considered to be "mounted on" another element, it can be directly mounted on the other element or there can be an intermediate element at the same time. When an element is considered to be "provided in" another element, it can be directly provided in the other element or there can be an intermediate element at the same time.

[0036] The present utility model provides a guardrail testing device 100, as Figure 1 shown, which includes: a support frame 1, a first pulley 3, a second pulley 4, a pulling rope 2, and a force measuring device 5. The support frame 1 is arranged on one side of the guardrail 6. The first pulley 3 is rotatably installed at the first end of the support frame 1. The second pulley 4 is rotatably installed at the second end of the support frame 1. The first end of the support frame 1 is arranged inside the guardrail 6, and the second end of the support frame 1 is arranged outside the guardrail 6. Among them, the first pulley 3 is rotationally connected to the second pulley 4 through the pulling rope 2. The first end of the pulling rope 2 is installed on the guardrail 6, and the second end of the pulling rope 2 is arranged inside the guardrail 6. Both ends of the force measuring device 5 are respectively connected to the pulling rope 2. Specifically, by setting the first pulley 3 and the second pulley 4, the force application direction of the pulling rope 2 is changed. The first end of the pulling rope 2 is installed on the guardrail 6, and the second end of the pulling rope 2 is arranged inside the guardrail 6. By pulling the pulling rope 2 inside the guardrail 6, the pulling rope 2 pulls the guardrail 6 in the horizontal direction, and the guardrail 6 is stretched outwards under the action of an external force. Moreover, both ends of the force measuring device 5 are arranged on the pulling rope 2. When the pulling rope 2 pulls the guardrail 6, the force measuring device 5 will display the pulling force value borne by the guardrail 6. When the pulling force value reaches the test preset value and the external force is cancelled, after the guardrail 6 is restored, there is no obvious deformation on the whole, indicating that the force-bearing performance of the guardrail 6 in the horizontal direction meets the requirements.

[0037] Furthermore, in the testing device 100, the support frame 1 can be arranged inside the guardrail 6. This testing device 100 is applied to a bridge, and it is also more convenient to apply a pulling force inside the guardrail 6. Moreover, by applying a pulling force to the guardrail 6 from the outside of the guardrail 6, this is consistent with the direction of the thrust force received by the guardrail 6 inside, and the testing method simulates the scenario where the guardrail 6 is pushed by a vehicle or a pedestrian. In the installation of the testing device 100, by setting the first pulley 3 and the second pulley 4, the transmission direction of the acting force is changed, and the position of applying the acting force to the guardrail 6 is changed, which is convenient for fixing the pulling rope 2 to the guardrail 6, simplifies the installation of the testing device 100, and makes the testing steps of the guardrail 6 simpler.

[0038] In some embodiments, as Figure 1 shown, the dynamometer 5 is disposed near the first end of the pulling rope 2. Specifically, since the first end of the pulling rope 2 is mounted on the guardrail 6, therefore, by disposing the dynamometer 5 near the first end of the pulling rope 2, the dynamometer 5 can be disposed closer to the guardrail 6. The purpose of such a setting is that when the pulling rope 2 pulls the guardrail 6, there is often a certain deviation between the pulling force value at the second end of the pulling rope 2 and the pulling force value at the first end of the pulling rope 2. By disposing the dynamometer 5 close to the guardrail 6, the pulling force value measured by the dynamometer 5 is closer to the pulling force value received by the guardrail 6. In this way, the test result is more meaningful as a reference, and the tensile property of the guardrail 6 tested by the test device 100 is more real and reliable.

[0039] In some embodiments, as Figure 1 shown, the test device 100 further has a loader 7. The loader 7 is disposed inside the guardrail 6, and the second end of the pulling rope 2 is connected to the loader 7. Specifically, this loader 7 has a motor and a transmission mechanism. The motor drives the transmission mechanism to rotate and drives the second end of the pulling rope 2 to move; moreover, this loader 7 is used to display the pulling force value at the second end of the pulling rope 2. By providing the loader 7, it is avoided to manually pull the pulling rope 2. When the loader 7 pulls the pulling rope 2, when the pulling force generated by the loader 7 reaches a preset value, the loader 7 stops pulling the pulling rope 2 and keeps the loading force of the loader 7 unchanged within a certain period of time. The dynamometer 5 records the pulling force value borne by the guardrail 6, so that it can be avoided that the pulling force value for pulling the guardrail 6 exceeds the preset range. In this embodiment, the model of the loader 7 can be CXD2-axis XC609T fully automatic lathe numerically controlled, and this loader 7 can be obtained in the market.

[0040] Preferably, as Figure 1 shown, the pulling rope 2 between the first pulley 3 and the second pulley 4 is disposed in a horizontal direction. Specifically, the first pulley 3 and the second pulley 4 are disposed in a horizontal direction. The first end of the pulling rope 2 acts on the guardrail 6 through the second pulley 4, so that its pulling force is in a horizontal direction and its pulling force is turned through the second pulley 4; the second end of the pulling rope 2 passes through the first pulley 3, so that the pulling force at the second end of the pulling rope 2 can be vertically downward. Through the first pulley 3 and the second pulley 4, the direction of the acting force for pulling the guardrail 6 is changed, which is convenient for applying the acting force inside the guardrail 6 and improves the convenience during the test process of the test device 100.

[0041] In some embodiments, as Figure 1 shown, the test direction of the dynamometer 5 intersects and is perpendicular to the loading direction of the loader 7. Specifically, the test direction of the dynamometer 5 can be horizontal, meeting the horizontal test requirements of the guardrail 6; the loading direction of the loader 7 can be perpendicular to the ground. When using the loader 7, the loader 7 can apply a pulling force in the plumb line direction.

[0042] In some embodiments, as Figure 2 shown, the support frame 1 includes a first support 11, a second support 12, and a third support 13. The first support 11 and the second support 12 are disposed inside the guardrail 6 and are arranged side by side along the length direction of the guardrail 6. Both ends of the third support 13 are respectively mounted on the first support 11 and the second support 12, and at least part of the third support 13 is disposed outside the guardrail 6. Specifically, the first support 11 and the second support 12 are used to be disposed inside the guardrail 6 and form a relatively stable support. The third support 13 is used to support the first pulley 3 and the second pulley 4 and to dispose the second pulley 4 outside the guardrail 6. Moreover, the first support 11 and the second support 12 are used to support the third support 13, improving the stability of the third support 13 in supporting the second pulley 4, so that when the pulling rope 2 pulls the guardrail 6, the stability of the force on the guardrail 6 in the horizontal direction is improved.

[0043] Preferably, as Figure 2 shown, the first support 11 includes a first support column 112, a first cross bar 113, and two first inclined support columns 111. The first support column 112 is mounted on the first cross bar 113, and the first support column 112 is perpendicular to the first cross bar 113. The two first inclined support columns 111 are respectively disposed on both sides of the first support column 112. The first end of the first inclined support column 111 is mounted on the first support column 112, and the second end of the first inclined support column 111 is mounted on the first cross bar 113. A triangular support structure is formed among the first inclined support column 111, the first support column 112, and the first cross bar 113. The second support 12 includes a second support column 122, a second cross bar 123, and two second inclined support columns 121. The second support column 122 is mounted on the second cross bar 123, and the second support column 122 is perpendicular to the second cross bar 123. The two second inclined support columns 121 are respectively disposed on both sides of the second support column 122. The first end of the second inclined support column 121 is mounted on the second support column 122, and the second end of the second inclined support column 121 is mounted on the second cross bar 123. A triangular support structure is formed among the second inclined support column 121, the second support column 122, and the second cross bar 123.

[0044] Specifically, the first support column 112 and the second support column 122 are used to support the third bracket 13. The two first diagonal support columns 111 are used to improve the stability of the first support column 112, and the two second diagonal support columns 121 are used to improve the stability of the second support column 122. A triangular support structure is formed among the first cross bar 113, the first diagonal support column 111, and the first support column 112, and among the second cross bar 123, the second diagonal support column 121, and the second support column 122. A triangle has strong stability, so that the support stability of the first bracket 11 and the second bracket 12 can be improved. Moreover, the first cross bar 113 and the second cross bar 123 can extend a certain length, and heavy objects can be placed on the first cross bar 113 and the second cross bar 123 to improve their stability.

[0045] Preferably, as Figure 2 shown, the third bracket 13 includes a first connecting rod 131, a second connecting rod 132, a third connecting rod 133, and a fourth connecting rod 134. The first end of the first connecting rod 131 is connected to the first end of the second connecting rod 132. The second end of the first connecting rod 131 is installed on the third connecting rod 133, and the second end of the second connecting rod 132 is installed on the fourth connecting rod 134. Both ends of the third connecting rod 133 are detachably connected to the first support column 112 and the second support column 122 respectively. Both ends of the fourth connecting rod 134 are detachably connected to the first support column 112 and the second support column 122 respectively. Specifically, the first connecting rod 131 is connected to the second connecting rod 132, and the first connecting rod 131 and the second connecting rod 132 can extend outside the guardrail 6, so that the second pulley 4 can be installed outside the guardrail 6, facilitating the application of the pulling force of the pulling rope 2 outside the guardrail 6. The first connecting rod 131 and the second connecting rod 132 are respectively installed on the first bracket 11 and the second bracket 12 through the third connecting rod 133 and the fourth connecting rod 134, making the support frame 1 form an integral support structure. Moreover, the third connecting rod 133 is detachably connected to the first support column 112 and the second support column 122, and the fourth connecting rod 134 is detachably connected to the first support column 112 and the second support column 122, so that the support frame 1 can be disassembled for transportation. After disassembly, the first bracket 11 and the second bracket 12 can be folded for transportation, improving the convenience of transportation.

[0046] Preferably, as Figure 2As shown, there are two first connecting rods 131 and two second connecting rods 132 respectively. The third bracket 13 further has a fifth connecting rod 135. The two first connecting rods 131 are arranged in parallel with each other, and the two second connecting rods 132 are also arranged in parallel with each other. The two first connecting rods 131 or the two second connecting rods 132 are connected by the fifth connecting rod 135. Specifically, by providing two first connecting rods 131 and two second connecting rods 132 and connecting the two first connecting rods 131 or the two second connecting rods 132 by the fifth connecting rod 135, the supporting strength of the third bracket 13 can be improved. At the same time, it is also convenient to install the second pulley 4 on the fifth connecting rod 135.

[0047] It should be noted that in the test device 100, by providing the first pulley 3 and the second pulley 4, the test device 100 can apply a pulling force to the pulling rope 2 inside the guardrail 6, and apply a pulling force to the pulling rope 2 from the outside of the guardrail 6 through the pulling rope 2, so that the test device 100 can complete the horizontal pulling force test of the guardrail 6. In other test devices 100, by using the above-mentioned arrangement of the two pulleys, enabling the pulling rope 2 to apply a horizontal pulling force from the outside of the guardrail 6 and an acting force inside the guardrail 6 are all within the protection scope of the present application.

[0048] When referring to the drawings for explanation, it is to explain the newly appeared features. In order to avoid repeated reference to the drawings resulting in an unclear description, for the features that have been described clearly, the drawings will not be cited one by one.

[0049] The purpose of the above embodiments is to exemplarily reproduce and deduce the technical solutions of the present invention, and to completely describe the technical solutions, purposes and effects of the present invention. The purpose is to enable the public to understand the disclosed content of the present invention more thoroughly and comprehensively, and it does not limit the protection scope of the present invention.

[0050] The above embodiments are not an exhaustive list of the present invention. In addition, there may be multiple other embodiments not listed. Any substitution and improvement made on the basis of not violating the concept of the present invention fall within the protection scope of the present invention.

Claims

1. Guardrail testing device, characterized in that, Including: A support frame, a first pulley, a second pulley, a pulling rope, and a force measuring device. The support frame is arranged on one side of the guardrail. The first pulley is rotatably installed at the first end of the support frame. The second pulley is rotatably installed at the second end of the support frame. The first end of the support frame is arranged inside the guardrail, and the second end of the support frame is arranged outside the guardrail. Wherein, the first pulley is rotatably connected to the second pulley through the pulling rope. The first end of the pulling rope is installed on the guardrail, and the second end of the pulling rope is arranged inside the guardrail. Both ends of the force measuring device are respectively connected to the pulling rope.

2. The guardrail testing device according to claim 1, wherein, The force measuring device is arranged close to the first end of the pulling rope.

3. The guardrail testing device according to claim 1, characterized in that, The testing device further has a loader. The loader is arranged inside the guardrail, and the second end of the pulling rope is connected to the loader.

4. The guardrail testing device according to claim 3, wherein, The pulling rope between the first pulley and the second pulley is arranged in a horizontal direction.

5. The guardrail testing device according to claim 4, wherein The testing direction of the force measuring device intersects and is perpendicular to the loading direction of the loader.

6. The guardrail testing device according to any one of claims 1 to 5, characterized in that, The support frame includes a first bracket, a second bracket, and a third bracket. The first bracket and the second bracket are arranged inside the guardrail and are arranged side by side along the length direction of the guardrail. Both ends of the third bracket are respectively installed on the first bracket and the second bracket, and at least part of the third bracket is arranged outside the guardrail.

7. The guardrail testing device according to claim 6, characterized in that, The first bracket includes a first support column, a first cross bar, and two first inclined support columns. The first support column is installed on the first cross bar, and the first support column is perpendicular to the first cross bar. The two first inclined support columns are respectively arranged on both sides of the first support column. The first end of the first inclined support column is installed on the first support column, and the second end of the first inclined support column is installed on the first cross bar. A triangular support structure is formed among the first inclined support column, the first support column, and the first cross bar.

8. The guardrail testing device according to claim 7, characterized in that, The second bracket includes a second support column, a second cross bar, and two second inclined support columns. The second support column is installed on the second cross bar, and the second support column is perpendicular to the second cross bar. The two second inclined support columns are respectively arranged on both sides of the second support column. The first end of the second inclined support column is installed on the second support column, and the second end of the second inclined support column is installed on the second cross bar. A triangular support structure is formed among the second inclined support column, the second support column, and the second cross bar.

9. The guardrail testing device according to claim 8, wherein, The third bracket includes a first connecting rod, a second connecting rod, a third connecting rod, and a fourth connecting rod. The first end of the first connecting rod is connected to the first end of the second connecting rod. The second end of the first connecting rod is installed on the third connecting rod. The second end of the second connecting rod is installed on the fourth connecting rod. Both ends of the third connecting rod are respectively detachably connected to the first support column and the second support column. Both ends of the fourth connecting rod are respectively detachably connected to the first support column and the second support column.

10. The guardrail testing device according to claim 9, characterized in that, There are two first connecting rods and two second connecting rods respectively. The third bracket further has a fifth connecting rod. The two first connecting rods are parallel to each other, and the two second connecting rods are parallel to each other. The two first connecting rods or the two second connecting rods are connected by the fifth connecting rod.

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