Hydraulic heightening control mechanism suitable for fan test

Abstract

The utility model relates to the field of coal mine fans, and discloses a hydraulic heightening control mechanism suitable for fan testing, which comprises an air duct, the right surface of the air duct is fixedly connected with a mounting seat, the right surface of the mounting seat is fixedly connected with a support frame, and the lower surface of the support frame penetrates through and is slidably connected with a guide rod. A supporting seat is fixedly connected to the lower surface of the guide rod, a hydraulic cylinder is arranged on the upper surface of the supporting seat, a connecting rod is fixedly connected to the upper surface of the supporting frame, and a supporting assembly is arranged on the front surface of the supporting frame. According to the utility model, through the cooperation of the support frame, the guide rod, the hydraulic cylinder and the support assembly, the height of the air duct can be flexibly adjusted by driving the hydraulic cylinder, and the adjustment precision is high, so that the working efficiency is improved, the accuracy of test data can be ensured, the operation difficulty and the labor cost are reduced, and the overall working quality is improved; and potential safety hazards existing in manual operation are avoided.

Description

Technical Field

[0001] The utility model relates to the field of fans for coal mines, in particular to a hydraulic height adjustment control mechanism suitable for fan testing. Background Art

[0002] Coal mine ventilators are an important part of the underground ventilation system of coal mines. They are mainly used to provide fresh air, remove harmful gases, and maintain the safety and stability of the underground working environment. The performance of ventilators is directly related to the safe production and operating efficiency of coal mines. In order to ensure the performance and reliability of coal mine ventilators, strict testing must be carried out.

[0003] The main tests include: air volume test: measuring the air volume and air pressure of the fan to ensure that it meets the design requirements; noise test: evaluating the operating noise of the fan to ensure compliance with safety and environmental standards; vibration test: detecting the vibration of the fan during operation to prevent equipment failure and extend service life. The test process faces complex test conditions: the coal mine environment is complex, and the test equipment needs to adapt to the high humidity, high dust and low temperature environment underground; high adjustment accuracy requirements: a high-precision adjustment system is required during the test to ensure the accuracy of the test data.

[0004] There are many problems with the traditional ventilator test and adjustment method. It mainly adjusts the fan up and down by fixing the air duct, but the large fans used in coal mines are large and heavy, and special equipment such as cranes and special traction devices are required when testing the sealing connection. In addition, the adjustment accuracy is poor, and the mechanical adjustment method is difficult to make subtle adjustments, which affects the accuracy of the test data. At the same time, traditional mechanical adjustment often requires a lot of manual operation, which is not only inefficient, but also has safety hazards during the operation process.

[0005] At the same time, when the traditional air duct is adjusted to a suitable position, in order to ensure stability, it is usually fixed with a mounting seat and a support frame. The support frame is fixed at different heights of the outer wall of the guide rod according to needs, and support rods in contact with the ground are installed on both sides. However, since the support rod is in a fixed state and the height of the support frame is not fixed, it is difficult for the support rod in a fixed position to provide effective support for the support frame in different positions. Utility Model Content

[0006] In order to make up for the above deficiencies, the utility model provides a hydraulic height adjustment control mechanism suitable for fan testing, aiming to improve the problems of poor adjustment accuracy and low adjustment efficiency of traditional air ducts in the prior art.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a hydraulic height adjustment control mechanism suitable for fan testing, including an air duct, a mounting seat is fixedly connected to the right surface of the air duct, a support frame is fixedly connected to the right surface of the mounting seat, a guide rod is passed through and slidably connected to the lower surface of the support frame, a support seat is fixedly connected to the lower surface of the guide rod, a hydraulic cylinder is arranged on the upper surface of the support seat, a connecting rod is fixedly connected to the upper surface of the support frame, a support assembly is arranged on the front surface of the support frame, the support assembly includes a slider, an adjustment assembly is arranged on the right surface of the slider, and the adjustment assembly includes a movable plate, and a connecting plate is hinged at the right end of the rear surface of the movable plate.

[0008] As a further description of the above technical solution:

[0009] The adjustment assembly also includes a positioning plate, a handle is fixedly connected to the right surface of the positioning plate, the inner wall of the sliding block is elastically connected to the limiting block via a compression spring, and a limiting groove is provided on the front surface of the supporting frame.

[0010] As a further description of the above technical solution:

[0011] The support assembly also includes a support rod, the top end of the rear surface of the support rod is fixedly connected to the front surface of the slider, and the lower surface of the support rod is fixedly connected to the base.

[0012] As a further description of the above technical solution:

[0013] The top end of the hydraulic cylinder is fixedly connected to the lower surface of the support frame, and the mounting seat, support frame, guide rod, hydraulic cylinder, and support seat are provided in multiple groups, and the multiple groups of mounting seats, support frames, guide rods, hydraulic cylinders, and support seats are symmetrically distributed about the center line of the air duct.

[0014] As a further description of the above technical solution:

[0015] The sliding block is slidably connected to the front surface of the supporting frame, and the moving plate penetrates and is slidably connected to the right surface of the sliding block.

[0016] As a further description of the above technical solution:

[0017] The right end of the connecting plate is hinged to the front end of the left surface of the positioning plate, and the left surface of the moving plate is fixedly connected to the front end of the right surface of the limiting block.

[0018] As a further description of the above technical solution:

[0019] The limit block passes through and is slidably connected to the rear surface of the slider, the lower surface of the limit block is set as an inclined surface, the limit block is inserted into the inner wall of the limit groove, one end of the compression spring is fixedly connected to the front surface of the limit block, and the other end of the compression spring is fixedly connected to the inner wall of the front side of the slider.

[0020] As a further description of the above technical solution:

[0021] The limiting grooves are provided in multiple groups, and the sliders, compression springs, limiting blocks, movable plates, and connecting plates are provided in multiple groups. The limiting grooves, sliders, compression springs, limiting blocks, movable plates, and connecting plates are symmetrically distributed front to back about the center line of the positioning plate.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the utility model, through the cooperation of the support frame, the guide rod, the hydraulic cylinder and the support assembly, the height of the air duct can be flexibly adjusted by driving the hydraulic cylinder, and has a high adjustment accuracy, which not only improves the work efficiency, but also ensures the accuracy of the test data, reduces the difficulty of operation and labor costs, improves the overall work quality, and avoids the safety hazards of manual operation.

[0024] 2. In the utility model, by cooperating with the adjustment components, after the limit block is moved by moving the handle to release the limit, the height of the support rod can be flexibly changed, so that it can be flexibly adjusted according to the height of the support frame, ensuring that the support rod and the base can be in contact with and fixed to the ground when the device is fixed, thereby improving the stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic front view of the three-dimensional structure of the overall device in the utility model;

[0026] Figure 2 It is a schematic diagram of the three-dimensional structure of the connecting rod, the supporting rod and the guide rod in the utility model;

[0027] Figure 3 It is a schematic cross-sectional view of the three-dimensional structure of the support frame in the utility model;

[0028] Figure 4 It is a schematic cross-sectional view of the three-dimensional structure of the support rod, the sliding block and the support frame in the utility model.

[0029] Legend:

[0030] 1. Air duct; 2. Mounting seat; 3. Support frame; 4. Guide rod; 5. Hydraulic cylinder; 6. Support seat; 7. Connecting rod; 81. Slider; 82. Support rod; 83. Base; 91. Compression spring; 92. Limit block; 93. Moving plate; 94. Connecting plate; 95. Positioning plate; 96. Handle; 901. Limiting groove. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Reference Figure 1-Figure 3 The utility model provides an embodiment: a hydraulic height control mechanism suitable for fan testing, including an air duct 1, the fan is installed in the air duct 1, and will move with the movement of the air duct 1, the right surface of the air duct 1 is fixedly connected with a mounting seat 2, the mounting seat 2 is used to connect the air duct 1 and the support frame 3, the mounting seat 2 and the air duct 1 and the support frame 3 can be fixed by welding or bolting, the right surface of the mounting seat 2 is fixedly connected with the support frame 3, the lower surface of the support frame 3 is penetrated and slidably connected with a guide rod 4, the support frame 3 moves longitudinally along the outer wall of the guide rod 4, and the lower surface of the guide rod 4 is fixedly connected with the support seat 6. The support seat 6 is in direct contact with the ground, and a through mounting hole is provided on the upper surface, which can be fixed to the ground using fixings such as fixing piles or bolts. A hydraulic cylinder 5 is provided on the upper surface of the support seat 6. The hydraulic cylinder 5 is a prior art and can be implemented by technicians in this field. Since it is a prior art, it will not be described in detail in this case. A connecting rod 7 is fixedly connected to the upper surface of the support frame 3. A support assembly is provided on the front surface of the support frame 3. The support assembly can increase the fixing points between the device and the ground, and can enhance the stability of the device. The support assembly includes a slider 81, and an adjustment assembly is provided on the right surface of the slider 81.

[0033] Reference Figure 2-Figure 4 The adjusting component includes a moving plate 93, and a connecting plate 94 is hinged at the right end of the rear surface of the moving plate 93. When the moving plate 93 moves, it will squeeze the connecting plate 94 to make it swing. The adjusting component also includes a positioning plate 95, and a handle 96 is fixedly connected to the right surface of the positioning plate 95. The handle 96 is convenient for grasping. The positioning plate 95 and the handle 96 will move synchronously. The inner wall of the slider 81 is elastically connected to the limiting block 92 through a compression spring 91. A limiting groove 901 is provided on the front surface of the support frame 3, and the limiting block 92 and the limiting groove 901 fit together.

[0034] Reference Figure 2-Figure 3The support assembly also includes a support rod 82, the top end of the rear surface of the support rod 82 is fixedly connected to the front surface of the slider 81, the lower surface of the support rod 82 is fixedly connected to a base 83, the upper surface of the base 83 is provided with a mounting hole, and can be in direct contact with the ground, and can be fixed to the ground using fixings such as fixing piles or bolts.

[0035] Reference Figure 2-Figure 4 The top of the hydraulic cylinder 5 is fixedly connected to the lower surface of the support frame 3. Starting the hydraulic cylinder 5 can drive the support frame 3 to move longitudinally. The mounting seat 2, the support frame 3, the guide rod 4, the hydraulic cylinder 5, and the support seat 6 are provided with multiple groups. The multiple groups of mounting seats 2, the support frame 3, the guide rod 4, the hydraulic cylinder 5, and the support seat 6 are symmetrically distributed with respect to the center line of the air duct 1, and are evenly distributed at the front and rear ends of the air duct 1, so as to provide stable support for the front and rear ends of the air duct 1. The slider 81 is slidably connected to the front surface of the support frame 3 and slides longitudinally. The movable plate 93 penetrates and is slidably connected to the right surface of the slider 81. The right end of the connecting plate 94 is hinged at the front end of the left surface of the positioning plate 95. The swinging connecting plate 94 can drive the positioning plate 95 to move horizontally. The left surface of the movable plate 93 is fixedly connected to the front end of the right surface of the limit block 92. The movable plate 93 and the limit block 92 will move synchronously. When the positioning plate 95 moves, it can squeeze the connecting plate 94 to further drive the movable plate 93 and the limit block 92 to move, thereby achieving the effect of releasing the limit.

[0036] Reference Figure 2-Figure 4 The limit block 92 passes through and is slidably connected to the rear surface of the slider 81. The lower surface of the limit block 92 is set to an inclined surface. By squeezing the inclined surface of the limit block 92, the limit block 92 will move forward. The upper surface of the limit block 92 is a plane. The limit block 92 is inserted into the inner wall of the limit groove 901. When moving forward, the limit block 92 will disengage from the limit groove 901 to release the limit. One end of the compression spring 91 is fixedly connected to the front surface of the limit block 92, and the other end of the compression spring 91 is fixedly connected to the inner wall of the front side of the slider 81. The limit block 92 moving forward will also squeeze the compression spring 91 to produce a reaction force. The limit groove 901 is provided with multiple groups, and the slider 81, the compression spring 91, the limit block 92, the moving plate 93, and the connecting plate 94 are provided with multiple groups. The multiple groups of limit grooves 901, the slider 81, the compression spring 91, the limit block 92, the moving plate 93, and the connecting plate 94 are symmetrically distributed front and back with the center line of the positioning plate 95.

[0037] Working principle: When using this device, first place the air duct 1 on the ground, then use bolts to fix the support base 6 at appropriate positions on the ground on the left and right sides of the air duct 1, then use bolts to install the mounting base 2 on the outer wall of the air duct 1, and then start the hydraulic cylinder 5 to drive the support frame 3, the mounting base 2, the air duct 1, and the connecting rod 7 to move upward. When the air duct 1 is adjusted to a suitable height, the hydraulic cylinder 5 is closed to stop it from moving, and the air duct 1 will be maintained at the current height. Through this device, the height of the fan inside the air duct 1 can be easily adjusted, and the adjustment accuracy is high.

[0038] When the support frame 3 is lifted up, the support rod 82 will gradually separate from the ground. At this time, the inclined surface of the lower surface of the limit block 92 will be squeezed, and the limit block 92 will retract into the slider 81 to release the limit and squeeze the compression spring 91 to produce a reaction force. After the limit is released, the slider 81, the support rod 82 and the base 83 will move downward. When the base 83 contacts the ground, it will stop moving. At this time, the limit block 92 will be inserted into the limit groove 901 under the elastic influence of the compression spring 91 to limit the support frame 3. Since the upper surface of the limit block 92 is a plane, the slider 81 cannot move upward without releasing the limit, thereby playing a one-way limit role. When the device moves to a suitable height and is in a stationary state, the base 83 will contact the ground. At this time, the base 83 and the ground can be fixed with bolts to enhance the fixing point of the device and the ground and enhance the stability of the device.

[0039] When the device needs to be moved, first unscrew the bolts on the base 83, then move the handle 96 to the left to drive the positioning plate 95 to move to the left to squeeze the connecting plate 94. After the connecting plate 94 is squeezed, it will swing and further drive the two sets of movable plates 93 to open in the front and rear directions, drive the limit block 92 to retract into the slider 81 to release the limit, and then start the hydraulic cylinder 5 to drive the support frame 3, the mounting seat 2, the air duct 1 and the connecting rod 7 to move downward. When the air duct 1 contacts the ground, close the hydraulic cylinder 5, then unscrew the bolts on the hydraulic cylinder 5 and the mounting seat 2, disassemble the hydraulic cylinder 5 and the air duct 1, complete the disassembly work, and facilitate the subsequent transfer of the air duct 1.

[0040] Finally, it should be noted that the above 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 make equivalent substitutions for some of the technical features therein. 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 hydraulic height control mechanism suitable for testing a fan, comprising an air duct (1), characterized in that: The right surface of the air duct (1) is fixedly connected to a mounting seat (2), the right surface of the mounting seat (2) is fixedly connected to a support frame (3), the lower surface of the support frame (3) is penetrated by and slidably connected to a guide rod (4), the lower surface of the guide rod (4) is fixedly connected to a support seat (6), the upper surface of the support seat (6) is provided with a hydraulic cylinder (5), the upper surface of the support frame (3) is fixedly connected to a connecting rod (7), the front surface of the support frame (3) is provided with a supporting assembly, the supporting assembly includes a slider (81), the right surface of the slider (81) is provided with an adjusting assembly, the adjusting assembly includes a moving plate (93), and the right end of the rear surface of the moving plate (93) is hinged with a connecting plate (94).

2. A hydraulic height adjustment control mechanism suitable for fan testing according to claim 1, characterized in that: The adjustment assembly also includes a positioning plate (95), the right surface of which is fixedly connected to a handle (96), the inner wall of the sliding block (81) is elastically connected to a limiting block (92) via a compression spring (91), and a limiting groove (901) is provided on the front surface of the support frame (3).

3. A hydraulic height adjustment control mechanism suitable for fan testing according to claim 1, characterized in that: The support assembly further comprises a support rod (82), the top end of the rear surface of the support rod (82) being fixedly connected to the front surface of the slider (81), and the lower surface of the support rod (82) being fixedly connected to a base (83).

4. A hydraulic height adjustment control mechanism suitable for fan testing according to claim 1, characterized in that: The top end of the hydraulic cylinder (5) is fixedly connected to the lower surface of the support frame (3), and the mounting seat (2), the support frame (3), the guide rod (4), the hydraulic cylinder (5), and the support seat (6) are provided in multiple groups, and the multiple groups of the mounting seat (2), the support frame (3), the guide rod (4), the hydraulic cylinder (5), and the support seat (6) are distributed in a left-right symmetrical manner with respect to the center line of the air duct (1).

5. The hydraulic height adjustment control mechanism for wind turbine testing according to claim 1, characterized in that: The slider (81) is slidably connected to the front surface of the support frame (3), and the moving plate (93) penetrates and is slidably connected to the right surface of the slider (81).

6. A hydraulic height adjustment control mechanism suitable for wind turbine testing according to claim 2, characterized in that: The right end of the connecting plate (94) is hinged to the front end of the left surface of the positioning plate (95), and the left surface of the moving plate (93) is fixedly connected to the front end of the right surface of the limiting block (92).

7. A hydraulic height control mechanism for wind turbine testing according to claim 2, characterized in that: The limit block (92) passes through and is slidably connected to the rear surface of the slider (81); the lower surface of the limit block (92) is arranged as an inclined surface; the limit block (92) is inserted into the inner wall of the limit groove (901); one end of the compression spring (91) is fixedly connected to the front surface of the limit block (92); and the other end of the compression spring (91) is fixedly connected to the inner wall of the front side of the slider (81).

8. The hydraulic height control mechanism for wind turbine testing according to claim 2, characterized in that: The limiting grooves (901) are provided in a plurality of groups, and the sliders (81), the compression springs (91), the limiting blocks (92), the movable plates (93), and the connecting plates (94) are provided in a plurality of groups. The limiting grooves (901), the sliders (81), the compression springs (91), the limiting blocks (92), the movable plates (93), and the connecting plates (94) are symmetrically distributed frontward and rearward about the center line of the positioning plate (95).

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