A test stand for static testing of steel strips

Abstract

The invention discloses a test frame for static testing of steel belts, comprising a test frame base, a mandrel, a first column, a connecting bracket, a second column and a steel belt mounting assembly; the novel structure is simple and easy to use, the test frame has two functions of a steel belt vertical combustion test and a test of the static friction coefficient of the steel belt, the first column and the second column are installed at the rear of the test frame base, during the test, the center of gravity of the bracket is located in the test frame base, which is convenient for preventing the test frame from turning over; the bracket used in the test frame is assembled into a box body by bending thick plates, which can meet the load test sample within 1 ton; the traction wheel is consistent with the actual elevator traction machine rope wheel size and manufacturing process, so that the test result of the steel belt on the traction wheel of the test frame is consistent with the actual elevator; the mandrel is used to support the bracket to meet the bearing strength requirement and improve the convenience of adding weights to the bracket; the steel belt is sampled from the steel belt of the whole machine, which meets the requirement that the steel belt of the elevator will not slip when it is lightly loaded or fully loaded, and meets the load strength requirement of the elevator.

Description

Technical Field

[0001] The invention relates to the technical field of elevators, in particular to a test stand for static testing of steel strips. Background Art

[0002] With the progress of the times and the development of science and technology, people have higher and higher requirements for material life. Elevators are increasingly pursuing a smooth, comfortable and silent riding experience. Steel belt elevators will be a better riding experience. More and more high-end business centers, communities, private villas and other places will use steel belt elevators to improve the grade of the project itself. At present, steel belt elevators do not belong to conventional traction elevators. The various parameters of the steel belt need to be measured by the company itself to verify that the steel belt meets the traction requirements; the static friction coefficient of the steel belt needs to be tested to verify the elevator stop state and whether the car will slip; the steel belt vertical combustion test needs to be performed to verify whether the steel belt coating can burn continuously, as well as the coating combustion process and the load-bearing retention capacity of the steel belt after combustion; therefore, a test stand for static testing of steel belts is urgently needed at this stage. Summary of the invention

[0003] The object of the present invention is to provide a test stand for static testing of steel strips to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: a test frame for static testing of steel strips, comprising a test frame base, a mandrel, a first column, a connecting bracket, a second column, a steel strip installation assembly, a first pull plate and a second pull plate, the top outer wall of the test frame base is distributed with a mandrel, the top outer wall of the test frame base is fixedly connected to the first column, the top outer wall of the test frame base is fixedly connected to the second column, a steel strip installation assembly is fixedly installed on one side outer wall of the first column, the steel strip installation assembly comprises a first bracket, a second bracket, a first dynamometer, a first steel strip connector, a second steel strip connector, a first steel strip body, a first guide wheel , a second guide wheel, a traction wheel and a retaining bracket, a traction wheel is fixedly connected to an outer wall on one side of the first column, a first steel belt body is sleeved on an outer wall on one side of the traction wheel, a first guide wheel is rotatably connected to an outer wall on one side of the second column, and the first steel belt body is sleeved on an outer wall on one side of the first guide wheel, a first steel belt connector is fixedly connected to an outer wall at one end of the first steel belt body, a first tension gauge is arranged on an outer wall at one end of the first steel belt connector, a first bracket is arranged on an outer wall at one end of the first tension gauge, a second steel belt connector is fixedly connected to an outer wall at the other end of the first steel belt body, and a second bracket is arranged on an outer wall at one end of the second steel belt connector.

[0005] Furthermore, a first pull plate is fixedly connected to an outer wall of one side of the first column, and the first pull plate is fixedly connected to an outer wall of one side of the test frame base; a second pull plate is fixedly connected to an outer wall of one side of the second column, and the second pull plate is fixedly connected to an outer wall of one side of the test frame base.

[0006] Furthermore, a connecting bracket is fixedly connected to an outer wall of one side of the second column, and the connecting bracket is fixedly connected to an outer wall of one side of the first column.

[0007] Furthermore, a retaining bracket is fixedly connected to the outer wall of one end of the traction wheel shaft, and the retaining bracket is fixedly connected to the outer wall of one end of the first guide wheel shaft. A second guide wheel is rotatably connected to the outer wall of one side of the connecting bracket, and the second guide wheel shaft is fixedly connected to the outer wall of the retaining bracket.

[0008] Compared with the prior art, the beneficial effects achieved by the present invention are: the new structure is simple and easy to use. The test frame has two functions: a vertical combustion test of a steel belt and a test of the static friction coefficient of the steel belt. The first column and the second column are installed at the rear of the test frame base. During the test, the center of gravity of the bracket is located in the test frame base to prevent the test frame from overturning. The bracket used in the test frame is assembled into a box body by bending thick plates, which can meet the load test samples within 1 ton; the guide wheel adopts imported bearings to meet the transmission of the steel belt under large loads; the traction wheel is consistent with the size and manufacturing process of the actual elevator traction machine rope wheel, so that the test result of the steel belt on the traction wheel of the test frame is consistent with the actual elevator; the bracket is supported by a top rod to meet the bearing strength requirements and improve the convenience of adding weights to the bracket; the steel belt is sampled from the whole machine steel belt, which meets the requirements that the elevator lightly loaded steel belt does not slip and meets the load strength requirements of the elevator. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0010] Figure 1 It is a schematic diagram of the main structure of a test stand for testing the static friction coefficient of a steel strip according to the present invention;

[0011] Figure 2 It is a side view structural schematic diagram of a test stand for testing the static friction coefficient of a steel strip according to the present invention;

[0012] Figure 3 It is a schematic diagram of the top view of the test stand base of the present invention;

[0013] Figure 4 The present invention Figure 2 A magnified view of the structure in the middle A area;

[0014] Figure 5This is a schematic diagram of the main structure of the test stand used for a vertical combustion test of the present invention;

[0015] Figure 6 It is a side view structural schematic diagram of the test stand used for vertical combustion test of the present invention;

[0016] Figure 7 The present invention Figure 5 A magnified view of the structure in the middle B area;

[0017] In the figure: 1. test frame base; 2. top rod; 3. first column; 4. connecting bracket; 5. second column; 6. steel belt installation assembly; 7. first pull plate; 8. second pull plate; 61. first bracket; 62. second bracket; 63. first dynamometer; 64. first steel belt connector; 65. second steel belt connector; 66. first steel belt body; 67. first guide wheel; 68. second guide wheel; 69. traction wheel; 610. retaining bracket; 611. termination bracket; 612. upper fire baffle; 613. third steel belt connector; 614. fourth steel belt connector; 615. second steel belt body; 616. second dynamometer; 617. third bracket 617; 618. lower fire baffle. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-4 , the present invention provides a technical solution:

[0020] Embodiment 1:

[0021] A test stand for static testing of steel strips, comprising a test stand base 1, a mandrel 2, a first column 3, a connecting bracket 4, a second column 5, a steel strip installation assembly 6, a first pull plate 7 and a second pull plate 8, the mandrel 2 is distributed on the top outer wall of the test stand base 1, the first column 3 is fixedly connected to the top outer wall of the test stand base 1, the second column 5 is fixedly connected to the top outer wall of the test stand base 1, a steel strip installation assembly 6 is fixedly installed on one side outer wall of the first column 3, and the steel strip installation assembly 6 comprises a first bracket 61, a second bracket 62, a first dynamometer 63, a first steel strip connector 64, The second steel belt connector 65, the first steel belt body 66, the first guide wheel 67, the second guide wheel 68, the traction wheel 69 and the retaining bracket 610, the traction wheel 69 is fixedly connected to the outer wall of one side of the first column 3, the first steel belt body 66 is sleeved on the outer wall of one side of the traction wheel 69, the first guide wheel 67 is rotatably connected to the outer wall of one side of the second column 5, and the first steel belt body 66 is sleeved on the outer wall of one side of the first guide wheel 67, the first steel belt connector 64 is fixedly connected to the outer wall of one end of the first steel belt body 66, and the first tension meter is arranged on the outer wall of one end of the first steel belt connector 64 63, a first bracket 61 is arranged on the outer wall of one end of the first tension gauge 63, a second steel belt connector 65 is fixedly connected to the outer wall of the other end of the first steel belt body 66, and a second bracket 62 is arranged on the outer wall of one end of the second steel belt connector 65; a first pull plate 7 is fixedly connected to the outer wall of one side of the first column 3, and the first pull plate 7 is fixedly connected to the outer wall of one side of the test frame base 1, a second pull plate 8 is fixedly connected to the outer wall of one side of the second column 5, and the second pull plate 8 is fixedly connected to the outer wall of one side of the test frame base 1; a connecting bracket 4 is fixedly connected to the outer wall of one side of the second column 5, and The connecting bracket 4 is fixedly connected to the outer wall of one side of the first column 3; a retaining bracket 610 is fixedly connected to the outer wall of one end of the traction wheel 69 shaft, and the retaining bracket 610 is fixedly connected to the outer wall of one end of the first guide wheel 67 shaft, and a second guide wheel 68 is rotatably connected to the outer wall of one side of the connecting bracket 4, and the second guide wheel 68 shaft is fixedly connected to the outer wall of the retaining bracket 610. Through the use of the retaining bracket 610, the purpose of fixing the first guide wheel 67, the second guide wheel 68 and the traction wheel 69 is achieved, ensuring that the first guide wheel 67, the second guide wheel 68 and the traction wheel 69 are fixed and do not shift.

[0022] See also Figure 5-7 , the present invention provides a technical solution:

[0023] Embodiment 2:

[0024] A test stand for static testing of steel strips, comprising a test stand base 1, a top rod 2, a first column 3, a connecting bracket 4, a second column 5, a steel strip installation assembly 6, a first pull plate 7 and a second pull plate 8, the top rod 2 is distributed on the top outer wall of the test stand base 1, the first column 3 is fixedly connected to the top outer wall of the test stand base 1, the second column 5 is fixedly connected to the top outer wall of the test stand base 1, the first pull plate 7 is fixedly connected to one side outer wall of the first column 3, and the first pull plate 7 is fixedly connected to one side outer wall of the test stand base 1, the second column 5 is fixedly connected to one side outer wall of the second column 5, and the second pull plate 8 is fixedly connected to one side outer wall of the test stand base 1, the steel strip installation assembly 6 is fixedly installed on one side outer wall of the first column 3, and the steel strip installation assembly 6 comprises a termination bracket 611, an upper fire baffle 612, a third steel strip connector 613, a fourth steel strip connector 614, a second steel strip body A first steel body 615, a second dynamometer 616, a third bracket 617 and a lower fire baffle 618, a terminal bracket 611 is fixedly connected to an outer wall on one side of the first column 3, an upper fire baffle 612 is fixedly connected to an outer wall on one side of the first column 3, a third steel belt connector 613 is fixedly installed on an outer wall on one side of the terminal bracket 611, a second steel belt body 615 is fixedly connected to an outer wall on one side of the third steel belt connector 613, and the second steel belt body 615 is inserted through the interior of the upper fire baffle 612, a fourth steel belt connector 614 is fixedly connected to an outer wall on one end of the second steel belt body 615, a lower fire baffle 618 is fixedly connected to an outer wall on one side of the first column 3, and the fourth steel belt connector 614 is inserted through the interior of the lower fire baffle 618, a second dynamometer 616 is arranged on an outer wall on one end of the fourth steel belt connector 614, and a third bracket 617 is arranged on an outer wall on one end of the second dynamometer 616;When the test stand is used to test the static friction coefficient of the first steel belt body 66, the first column 3 and the second column 5 are first installed on the test stand base 1 by hexagonal bolts, and the connecting bracket 4 is installed between the first column 3 and the second column 5 to ensure the vertical distance between the first column 3 and the second column 5. The backs of the first column 3 and the second column 5 are tightened by the first pull plate 7 and the second pull plate 8. Then the first guide wheel 67 and the second guide wheel 68 are installed on the top of the second column 5 and the right side of the connecting bracket 4, and the traction wheel 69 is installed on the upper position of the first column 3, and it is ensured that the first guide wheel 67 and the second guide wheel 68 can rotate, and the traction wheel 69 cannot rotate. Then the first steel belt body 66 is passed around the first guide wheel 67, the second guide wheel 68 and the traction wheel 69, and connected to the first steel belt connector 64 and the second steel belt connector 65 at both ends of the first steel belt body 66. A first dynamometer 63 is installed on the connector 64, the first bracket 61 is placed on the mandrel 2, and the first dynamometer 63 is connected to the first bracket 61, the second bracket 62 is placed on the mandrel 2, and the second steel belt connector 65 is connected to the second bracket 62, the same number of weights are added to the first bracket 61 and the second bracket 62, and then the nut on the mandrel 2 is turned to separate the mandrel 2 from the bottom ends of the first bracket 61 and the second bracket 62, and then weights are added to the first bracket 61 or weights are reduced from the second bracket 62 until the first steel belt body 66 slips on the traction wheel 69, and the slip is determined by making lines on the first steel belt body 66 and the traction wheel 69 in advance, and the weight of the weight in the first bracket 61 is T1, and the weight of the weight in the second bracket 62 is T2, and according to the actual tension on both sides of the test wheel during the last unloading before the slip, the formula: T1 / T2=e is used; faThe upper limit value of the static friction coefficient under the loading condition is calculated to achieve the purpose of testing the static friction coefficient of the first steel belt body 66; when the test frame is used to perform a vertical combustion test on the second steel belt body 615, the first column 3 and the second column 5 are first installed on the test frame base 1 by hexagonal bolts, and the connecting bracket 4 is installed between the first column 3 and the second column 5 to ensure the vertical distance between the first column 3 and the second column 5. The backs of the first column 3 and the second column 5 are tightened by the first pull plate 7 and the second pull plate 8, and then, two terminal brackets 611 are installed on the top of the first column 3, and the upper fire baffle 612 is installed in the middle of the first column 3. The third steel belt connector 613 is installed on the top terminal bracket 611, and the second steel belt body 615 is installed on the third steel belt connector 613, and the second steel belt body 615 is passed through the upper fire baffle 612, and the lower fire baffle 618 is installed in the lower middle part of the first column 3. A fourth steel belt connector 614 is installed at the other end of the second steel belt body 615, and the fourth steel belt connector 614 is passed through the lower fire baffle 618, and then a second tensile gauge 616 is installed on the fourth steel belt connector 614, and a third bracket 617 is connected to the second tensile gauge 616, and then the third bracket 617 is supported by a push rod 2, and a weight is added to the third bracket 617 to apply 1 / 12 of the minimum breaking tension of the steel belt, and then the nut on the push rod 2 is rotated to separate the push rod 2 from the bottom ends of the first bracket 61 and the second bracket 62, and an acetylene flame blowtorch is used at an angle of 45° to perform a combustion test on the lower part of the second steel belt body 615, with a flame temperature of 1000°C. After 10 seconds, the blowtorch is removed to check whether the second steel belt body 615 continues to burn, as well as the combustion process of the coating layer and the load-bearing holding capacity of the second steel belt body 615 after combustion, so as to achieve the purpose of performing a vertical combustion test on the second steel belt body 615.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A test stand for static testing of a steel strip, comprising a test stand base (1), a mandrel (2), a first column (3), a connecting bracket (4), a second column (5), a steel strip mounting assembly (6), a first pull plate (7) and a second pull plate (8), characterized in that: A top rod (2) is distributed on the top outer wall of the test frame base (1), a first column (3) is fixedly connected to the top outer wall of the test frame base (1), a second column (5) is fixedly connected to the top outer wall of the test frame base (1), a steel belt installation assembly (6) is fixedly installed on one side outer wall of the first column (3), and the steel belt installation assembly (6) includes a first bracket (61), a second bracket (62), a first tensile gauge (63), a first steel belt connector (64), a second steel belt connector (65), a first steel belt body (66), a first guide wheel (67), and a plurality of guide wheels (68). ), a second guide wheel (68), a traction wheel (69) and a retaining bracket (610), a traction wheel (69) is fixedly connected to an outer wall of one side of the first column (3), a first steel belt body (66) is sleeved on an outer wall of one side of the traction wheel (69), a first guide wheel (67) is rotatably connected to an outer wall of one side of the second column (5), and the first steel belt body (66) is sleeved on an outer wall of one side of the first guide wheel (67), a first steel belt connector (64) is fixedly connected to an outer wall of one end of the first steel belt body (66), and an outer wall of one end of the first steel belt connector (64) A first tension gauge (63) is arranged on the upper surface, a first bracket (61) is arranged on the outer wall of one end of the first tension gauge (63), a second steel belt connector (65) is fixedly connected to the outer wall of the other end of the first steel belt body (66), a second bracket (62) is arranged on the outer wall of one end of the second steel belt connector (65), a first pull plate (7) is fixedly connected to the outer wall of one side of the first column (3), and the first pull plate (7) is fixedly connected to the outer wall of one side of the test frame base (1), a second pull plate (8) is fixedly connected to the outer wall of one side of the second column (5), and the second pull plate ( 8) is fixedly connected to an outer wall of one side of the test frame base (1); a connecting bracket (4) is fixedly connected to an outer wall of one side of the second column (5), and the connecting bracket (4) is fixedly connected to an outer wall of one side of the first column (3); a retaining bracket (610) is fixedly connected to an outer wall of one end of the traction wheel (69) shaft, and the retaining bracket (610) is fixedly connected to an outer wall of one end of the first guide wheel (67) shaft; a second guide wheel (68) is rotatably connected to an outer wall of one side of the connecting bracket (4), and the second guide wheel (68) shaft is fixedly connected to the outer wall of the retaining bracket (610).

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