Multi-rope friction type elevator test platform

Abstract

The utility model discloses a multi-rope friction type elevator test platform, which comprises a variable frequency motor, a planet wheel speed reducer, a friction wheel and a plurality of steel wire ropes, a derailment detection mechanism is arranged behind the friction wheel, the derailment detection mechanism comprises a plurality of groups of detection assemblies, and the detection assemblies are used for detecting the left and right positions of the plurality of steel wire ropes; a left sliding rail groove and a right sliding rail groove are formed in the top of the supporting plate, sliding blocks are connected to the inner surfaces of the two sliding rail grooves in a sliding mode and used for installing the detection assemblies, and the installation positions and the number of the detection assemblies can be adjusted. According to the multi-rope friction type elevator test platform, when the test platform works, the position of the steel wire rope is detected through the detection assembly, and when derailing occurs, the pressure sensor detects data so as to generate a danger signal, so that the test platform stops working in time, and the safety of the device in use is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mine hoists, in particular to a multi-rope friction hoist test platform. Background Art

[0002] With the increasing demand for energy in modern industry, the mining depth of mines is getting deeper and deeper. Multi-rope friction hoists have become the main hoisting equipment in major coal mines in my country due to their advantages such as small size, light weight, large lifting capacity, good safety performance, and suitability for deep wells. As one of the key equipment in mine production, hoists are mainly responsible for lifting coal in the main shaft, raising and lowering personnel and equipment in the auxiliary shaft, and lowering materials. Domestic and foreign experts and scholars have conducted a lot of experiments and research on hoist systems.

[0003] Reference patent announcement number "CN218973849U" discloses a multi-rope friction hoist test platform. The main shaft is driven by a variable frequency motor with a planetary gear reducer. The friction between the wire rope and the friction pad of the drive drum drives the wire rope to operate. The wrap angle between the wire rope and the guide wheel is adjusted by the tensioning device, thereby adjusting the tension inside the wire rope. The variable frequency motor controls the speed to achieve effective control of the wire rope speed.

[0004] This patent adopts an integral closed system, which can conduct tests continuously for a long time. The existing multi-rope friction hoist test platform requires the hoist to work for a long time during the test to detect its performance. During the long test, friction occurs between the wire rope and the friction wheel. When the wear is large, the surface of the wire rope and the friction wheel becomes smooth, and the wire rope may derail. If the test is not stopped in time, large losses will occur. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a multi-rope friction hoist test platform, which solves the problem of wire rope derailment during long-term testing of the multi-rope friction hoist test platform.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a multi-rope friction hoist test platform includes a variable frequency motor, a planetary gear reducer, a friction wheel and multiple steel ropes, and a derailment detection mechanism is provided behind the friction wheel, and the derailment detection mechanism includes:

[0007] A detection assembly is provided with multiple groups, and the detection assembly is used to detect the left and right positions of multiple steel ropes. The detection assembly includes a support plate and a lifting rod. The top of the support plate is provided with two left and right slide rail grooves. The inner surfaces of the two slide rail grooves are slidably connected to sliders, and the tops of the two sliders are rotatably connected to guide wheels. Pressure sensors and first limit springs are respectively placed on both sides of the sliders. The outer side of the support plate is threadedly connected to an adjustment bolt, and one end of the adjustment bolt extends into the interior of the slide rail groove and contacts the pressure sensor.

[0008] The installation component is used to install the detection component, and the installation position and quantity of the detection component can be adjusted.

[0009] Preferably, a U-shaped groove is provided at the top of the lifting rod, a bolt rod is inserted into the lifting rod, and the bolt rod passes through the U-shaped groove, the support plate is sleeved on the surface of the bolt rod located in the U-shaped groove, and the bolt rod passes through the surface on the other side of the lifting rod and is threadedly connected with a nut.

[0010] Preferably, the mounting assembly includes a base, two first front and rear sliding grooves are provided on the top of the base, and a second sliding groove is provided in the middle of the top of the base, and a baffle is fixedly connected to the bottom of the lifting rod.

[0011] Preferably, the bottom of the baffle is fixedly connected with two front and rear square blocks, and the middle of the bottom of the baffle is fixedly connected with a mounting sleeve rod, the front and rear two square blocks are respectively inserted in two first sliding grooves, and the mounting sleeve rod is inserted in the second sliding groove.

[0012] Preferably, L-shaped grooves are provided on both sides of the mounting sleeve rod, a T-shaped block is inserted at the opening of the mounting sleeve rod, and blocking rods are fixedly connected to the left and right sides of the T-shaped block, and a second limit spring is fixedly connected to the top of the T-shaped block.

[0013] Preferably, the variable frequency motor, the planetary gear reducer and the friction wheel are connected in sequence, the steel wire rope is wound around the outside of the friction wheel, and the friction wheel drives the steel wire rope to operate through friction force.

[0014] Beneficial effects

[0015] The utility model provides a multi-rope friction hoist test platform. Compared with the existing technology, it has the following advantages:

[0016] 1. The multi-rope friction hoist test platform is slidably connected to sliders on the inner surfaces of the two slides, and the tops of the two sliders are rotatably connected to guide wheels. Pressure sensors and first limit springs are placed on both sides of the sliders. When the test platform is working, the position of the wire rope is detected by the detection component. When derailment occurs, the pressure sensor detects the data and generates a danger signal, so that the test bench is stopped in time, which improves the safety of the device during use.

[0017] 2. The multi-rope friction hoist test platform includes a base through an installation component. Two first slide grooves are opened in the front and rear on the top of the base, and a second slide groove is opened in the middle of the top of the base. The bottom of the lifting rod is fixedly connected with a baffle. The detection component is installed on the base through the installation component. The installation is convenient and quick. In addition, the position and number of the detection components can be adjusted during installation to adapt to the position and number of the steel ropes on the friction wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the appearance of the utility model;

[0019] Figure 2 It is a partial schematic diagram of the utility model;

[0020] Figure 3 Schematic diagram of the derailment detection assembly of the present utility model;

[0021] Figure 4 This is an exploded view of the installation components of the utility model.

[0022] In the figure: 1. Frequency conversion motor; 2. Planetary gear reducer; 3. Friction wheel; 4. Wire rope; 5. Detection assembly; 51. Support plate; 52. Lifting rod; 53. Slide groove; 54. Slider; 55. Guide wheel; 56. Pressure sensor; 57. Adjustment bolt; 58. First limit spring; 59. U-shaped groove; 510. Bolt rod; 6. Mounting assembly; 61. Base; 62. First slide groove; 63. Second slide groove; 64. Baffle; 65. Square block; 66. Mounting sleeve rod; 67. L-shaped groove; 68. T-shaped block; 69. Baffle rod; 610. Second limit spring. DETAILED DESCRIPTION

[0023] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0024] See also Figures 1-4 The multi-rope friction hoist test platform provides two technical solutions: a multi-rope friction hoist test platform includes a variable frequency motor 1, a planetary gear reducer 2, a friction wheel 3 and multiple steel ropes 4. The variable frequency motor 1, the planetary gear reducer 2 and the friction wheel 3 are connected in sequence. The steel ropes 4 are wound around the outside of the friction wheel 3, and the friction wheel 3 drives the steel ropes 4 to operate through friction. It also includes a braking device, a tensioning device and a sheave device (not shown in the figure). The braking device is used to brake the friction wheel 3. The steel ropes 4, the sheave device and the tensioning device form a closed device. A derailment detection mechanism is set behind the friction wheel 3. The derailment detection mechanism includes:

[0025] The detection assembly 5 is provided with multiple groups, and the detection assembly 5 is used to detect the left and right positions of multiple steel wire ropes 4. The detection assembly 5 includes a support plate 51 and a lifting rod 52. The top of the support plate 51 is provided with two left and right slide rail grooves 53. The inner surfaces of the two slide rail grooves 53 are slidably connected with sliders 54, and the tops of the two sliders 54 are rotatably connected with guide wheels 55. Pressure sensors 56 and first limit springs 58 are placed on both sides of the sliders 54 respectively. The outer side of the support plate 51 is threadedly connected with an adjusting bolt 57, and the adjusting bolt 57 extends to the slide. One end of the rail groove 53 is in contact with the pressure sensor 56. A U-shaped groove 59 is provided on the top of the lifting rod 52. A bolt rod 510 is inserted into the lifting rod 52, and the bolt rod 510 passes through the U-shaped groove 59. The support plate 51 is sleeved on the surface of the bolt rod 510 located in the U-shaped groove 59. The bolt rod 510 passes through the surface on the other side of the lifting rod 52 and is threadedly connected with a nut. The detection component 5 is also equipped with a computer. The pressure sensor 56 transmits data to the computer through wires, and the computer is responsible for processing the data of the pressure sensor 56.

[0026] When the test platform is working, the position of the wire rope 4 is detected by the detection component 5. When derailment occurs, the pressure sensor 56 detects the data and generates a danger signal, thereby stopping the test platform in time, improving the safety of the device during use.

[0027] The mounting assembly 6 is used to install the detection assembly 5, and the installation position and number of the detection assembly 5 can be adjusted. The mounting assembly 6 includes a base 61. The height of the base 61 needs to be designed according to the position of the wire rope 4. The top of the base 61 is provided with two front and rear first slide grooves 62, and the middle of the top of the base 61 is provided with a second slide groove 63. The bottom of the lifting rod 52 is fixedly connected to a baffle 64, and the bottom of the baffle 64 is fixedly connected to two front and rear square blocks 65, and the middle of the bottom of the baffle 64 is fixedly connected to a mounting sleeve rod 66. The front and rear square blocks 65 are respectively inserted into the two first slide grooves 62, and the mounting sleeve rod 66 is inserted into the second slide groove 63. L-shaped grooves 67 are provided on the left and right sides of the mounting sleeve rod 66, and a T-shaped block 68 is inserted at the opening of the mounting sleeve rod 66. The left and right sides of the T-shaped block 68 are fixedly connected to a baffle rod 69, and the top of the T-shaped block 68 is fixedly connected to a second limit spring 610.

[0028] The detection component 5 is installed on the base 61 through the installation component 6. The installation operation is convenient and quick. Moreover, the position and number of the detection component 5 can be adjusted during installation to adapt to the position and number of the wire rope 4 on the friction wheel 3.

[0029] When in use, the base 61 is installed to the ground in front of the friction wheel 3 through the expansion bolts, the baffle 64 is placed above the base 61, and the square block 65 is inserted into the first slide groove 62, the installation sleeve rod 66 is inserted into the second slide groove 63, and the T-block 68 is inserted into the installation sleeve rod 66 and rotated to complete the installation of the detection component 5. During installation, it is necessary to pay attention to the alignment of the position of the detection component 5 and the single wire rope 4. The height of the support plate 51 is adjusted by the lifting rod 52, and the nut on the bolt rod 510 is loosened at the same time to adjust the support plate 5 1, that is, adjust the angle of the two guide wheels 55, so that the inclination angle of the two guide wheels 55 is the same as the angle of the wire rope 4, and the wire rope 4 passes through the two guide wheels 55, turn the adjusting bolt 57, the adjusting bolt 57 moves and pushes the slider 54 to move through the pressure sensor 56, so that the guide wheel 55 contacts the wire rope 4, and the data of the pressure sensor 56 at this time is set to the starting value. When the wire rope 4 derails, the wire rope 4 and the push guide wheel 55 move, and the pressure data detected by the pressure sensor 56 increases, and it is determined that derailment occurs at this time.

[0030] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-rope friction hoist test platform, comprising a variable frequency motor (1), a planetary gear reducer (2), a friction wheel (3) and a plurality of steel ropes (4), characterized in that: A derailment detection mechanism is provided behind the friction wheel (3), and the derailment detection mechanism comprises: A detection assembly (5) is provided with multiple groups, and the detection assembly (5) is used to detect the left and right positions of multiple steel wire ropes (4). The detection assembly (5) includes a support plate (51) and a lifting rod (52). The top of the support plate (51) is provided with two left and right slide rail grooves (53). The inner surfaces of the two slide rail grooves (53) are slidably connected with sliders (54), and the tops of the two sliders (54) are rotatably connected with guide wheels (55). Pressure sensors (56) and first limit springs (58) are respectively placed on both sides of the slider (54). The outer side of the support plate (51) is threadedly connected with an adjustment bolt (57), and one end of the adjustment bolt (57) extends to the inside of the slide rail groove (53) and contacts with the pressure sensor (56); The installation component (6) is used to install the detection component (5), and the installation position and quantity of the detection component (5) can be adjusted.

2. A multi-rope friction hoist test platform according to claim 1, characterized in that: A U-shaped groove (59) is provided at the top of the lifting rod (52), a bolt rod (510) is inserted into the lifting rod (52), and the bolt rod (510) passes through the U-shaped groove (59), the support plate (51) is sleeved on the surface of the bolt rod (510) located in the U-shaped groove (59), and the bolt rod (510) passes through the surface of the other side of the lifting rod (52) and is threadedly connected with a nut.

3. The multi-rope friction hoist test platform according to claim 1, characterized in that: The mounting assembly (6) includes a base (61), the top of the base (61) is provided with two first sliding grooves (62) at the front and rear, and a second sliding groove (63) is provided in the middle of the top of the base (61), and the bottom of the lifting rod (52) is fixedly connected with a baffle (64).

4. A multi-rope friction hoist test platform according to claim 3, characterized in that: The bottom of the baffle (64) is fixedly connected to two front and rear square blocks (65), and the middle of the bottom of the baffle (64) is fixedly connected to a mounting sleeve rod (66), the front and rear two square blocks (65) are respectively inserted in the two first sliding grooves (62), and the mounting sleeve rod (66) is inserted in the second sliding groove (63).

5. The multi-rope friction hoist test platform according to claim 4, characterized in that: L-shaped grooves (67) are provided on both the left and right sides of the mounting sleeve rod (66), a T-shaped block (68) is inserted into the opening of the mounting sleeve rod (66), a blocking rod (69) is fixedly connected to the left and right sides of the T-shaped block (68), and a second limit spring (610) is fixedly connected to the top of the T-shaped block (68).

6. The multi-rope friction hoist test platform according to claim 1, characterized in that: The variable frequency motor (1), the planetary gear reducer (2) and the friction wheel (3) are connected in sequence, the steel wire rope (4) is wound around the outside of the friction wheel (3), and the friction wheel (3) drives the steel wire rope (4) to operate through friction force.

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