A rotatable experimental table

Abstract

The present invention discloses a rotatable experimental table, comprising: a rotating table for carrying experimental instruments, a fixed table for supporting the rotating table, and a driving device, wherein the fixed table is provided with a groove for accommodating the rotating table, the driving device is connected to the rotating table to drive the rotating table to rotate in the groove, the table top of the fixed table is flush with the table top of the rotating table, and the two are detachably connected. By using the rotatable experimental table provided by the present invention, the convenience of maintenance and internal cleaning of coal quality testing experimental instruments can be effectively improved, and the labor intensity of operators can be reduced. In addition, the device has a simple structure and is easy to use, and can be promoted for use.

Description

Technical Field

[0001] The invention relates to the technical field of coal quality testing, and more specifically to a rotatable test bench. Background Art

[0002] In the prior art, coal quality testing is an extremely important task in the power and coal industries. Coal analysis items generally include total moisture, air analysis, calorific value, elemental analysis, etc. Most of the coal testing items have a test temperature of about 800-1300℃, and the instrument is prone to instrument failure when operating in a high temperature environment for a long time. In addition, a large amount of smoke and coal powder will be generated during the coal quality testing operation, which is easy to fall into the inside of the instrument and is difficult to clean from the front of the instrument.

[0003] Most of these instruments are large in size and heavy in weight, and the internal structure of the instruments is compact. When the instrument fails and needs to be repaired, it is difficult for operators to move the instrument. In addition, these instruments are generally placed against the wall for ventilation and smoke exhaust, which makes it difficult for operators to repair or overhaul the parts on the back and sides of the instrument. Moreover, most coal quality testing tables are fixed tables, mostly made of cement or customized chemical laboratory tables. These fixed tables only consider factors such as stability and corrosion resistance. Ultimately, it is difficult for operators to overhaul and clean the internal parts of coal quality testing instruments.

[0004] In summary, how to improve the convenience of maintenance and internal cleaning of coal quality testing instruments is a problem that needs to be urgently solved by technical personnel in this field. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide a rotatable test bench, which can effectively improve the convenience of maintenance and internal cleaning of coal quality testing instruments, reduce the labor intensity of operators, and the device has a simple structure, is easy to use, and can be promoted for use.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A rotatable experimental table comprises: a rotating table for carrying an experimental instrument, a fixed table for supporting the rotating table, and a driving device, wherein the fixed table is provided with a groove for accommodating the rotating table, the driving device is connected to the rotating table to drive the rotating table to rotate in the groove, the table top of the fixed table is flush with the table top of the rotating table, and the two are detachably connected.

[0008] Preferably, the fixing platform comprises a fixing platform surface and a fixing frame for supporting the fixing platform surface, the fixing platform surface and the top of the fixing frame are snap-connected, and the connection between the two is coated with epoxy resin glue.

[0009] Preferably, the rotating table comprises a circular rotating platform surface and a rotating frame for supporting the rotating platform surface, the rotating platform surface is arranged on the top of the rotating frame, and the connection between the two is coated with epoxy resin glue; the rotating frame is a two-step structure, the outer periphery of the first step of the rotating frame is provided with a track, and the outer periphery of the second step of the rotating frame is sleeved with a rotating bearing, and the rotating bearing is used to connect the rotating frame and the fixed frame;

[0010] The driving device comprises a gear for driving the track to rotate and a motor for driving the gear to rotate forward and reversely. The gear is meshed with the track, and the motor is connected with the gear.

[0011] Preferably, the fixed platform surface and the rotating platform surface are both epoxy resin surfaces, and the fixed frame and the rotating frame are both steel frames.

[0012] Preferably, the rotating platform surface is provided with a horizontal support rod along the circumferential direction for adjusting the horizontality of the rotating platform surface, the horizontal support rod includes a base, a support sleeve and a support bolt, the support sleeve is embedded in the rotating platform surface, the base is provided at the bottom of the support bolt, and the support bolt and the support sleeve are threadedly connected.

[0013] Preferably, the rotating platform surface is provided with a level meter for detecting whether the rotating platform surface is in a horizontal state.

[0014] Preferably, the rotating platform surface and the fixed platform surface are connected by a fixing bolt, a dustproof buckle plate is provided between the rotating platform surface and the fixed platform surface, and dust collecting troughs for collecting coal powder dust are provided below the dustproof buckle plate and the fixing bolt.

[0015] Preferably, a dust-proof brush for preventing dust from falling in is provided at the connecting gap between the rotating platform surface and the fixed platform surface.

[0016] Preferably, one end of the fixing bolt is fixedly connected to the rotating platform surface, and the other end is clamped with the fixed platform surface, and the length of the fixing bolt is greater than the width of the dustproof buckle plate.

[0017] Preferably, a storage cabinet for storing instrument spare parts is provided below the fixed platform.

[0018] When using the rotatable experimental table provided by the present invention, first, the rotating table can be placed in the groove, and then the experimental instrument can be placed on the rotating table. If the experimental instrument needs to be inspected or cleaned, the experimental instrument needs to be rotated. At this time, the driving device can be controlled to operate so that the driving device drives the rotating table to rotate in the groove, so as to synchronously drive the experimental instrument to rotate and change position. When the experimental instrument is turned to the required inspection or cleaning position, the driving device is controlled to stop running, and the table top of the fixed table and the table top of the rotating table are fixed to avoid the movement of the experimental instrument and the rotating table during use, which may cause danger. Then, the experimental instrument can be inspected or cleaned. When the inspection or cleaning operation of the experimental instrument is completed, the experimental instrument needs to be rotated again. First, the fixed relationship between the table top of the fixed table and the table top of the rotating table can be released, and then the above operation can be repeated to achieve the reset operation of the experimental instrument, so that the operator can perform normal experimental operations on the experimental instrument.

[0019] In summary, the rotatable test bench provided by the present invention can effectively improve the convenience of maintenance and internal cleaning of coal quality testing instruments, reduce the labor intensity of operators, and the device has a simple structure and is easy to use, and can be promoted for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the structure of the rotatable experimental table provided by the present invention;

[0022] Figure 2 for Figure 1 A top view of

[0023] Figure 3 It is a schematic diagram of the local structure when the fixing bolt at the connection between the rotating platform surface and the fixed platform surface is opened;

[0024] Figure 4 It is a schematic diagram of the local structure when the dustproof buckle plate is buckled;

[0025] Figure 5 It is a schematic diagram of the structure of the horizontal support rod.

[0026] Figure 1-Figure 5 middle:

[0027] 1 is a rotating table, 11 is a rotating platform surface, 12 is a rotating frame, 13 is a track, 14 is a rotating bearing, 2 is a fixed table, 21 is a fixed platform surface, 22 is a fixed frame, 23 is a storage cabinet, 3 is a driving device, 4 is a groove, 5 is a horizontal support rod, 51 is a base, 52 is a support sleeve, 53 is a support bolt, 6 is a level, 7 is a fixing bolt, 8 is a dustproof buckle plate, 9 is a dust collecting trough, and 10 is a dustproof brush. DETAILED DESCRIPTION

[0028] 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.

[0029] The core of the present invention is to provide a rotatable test bench, which can effectively improve the convenience of maintenance and internal cleaning of coal quality testing instruments, reduce the labor intensity of operators, and the device has a simple structure, is easy to use, and can be promoted for use.

[0030] Please refer to Figures 1 to 5 .

[0031] This specific embodiment provides a rotatable experimental table, including: a rotating table 1 for carrying an experimental instrument, a fixed table 2 for supporting the rotating table 1, and a driving device 3, the fixed table 2 is provided with a groove 4 for accommodating the rotating table 1, the driving device 3 is connected to the rotating table 1 to drive the rotating table 1 to rotate in the groove 4, the table top of the fixed table 2 is flush with the table top of the rotating table 1, and the two are detachably connected.

[0032] It should be noted that when the instrument fails and needs to be repaired or cleaned, the operator can release the connection between the rotating table 1 and the fixed table 2, and then use the driving device 3 to drive the rotating table 1 to rotate to a suitable position, and then fix the rotating table 1 and the fixed table 2 to facilitate the repair and cleaning of the faulty instrument. After the repair and cleaning are completed, repeat the above operation and turn the instrument back to its original position. Compared with conventional fixed test benches, this device greatly facilitates the repair, maintenance and sanitation cleaning operations of heavy coal testing instruments. Moreover, the rotation process of the rotating table 1 can be controlled by the driving device 3, which can reduce the labor intensity of the operator.

[0033] In actual use, the shape, structure, size, material, etc. of the rotating table 1, the fixed table 2 and the driving device 3 can be determined according to actual conditions and actual needs.

[0034] When using the rotatable experimental table provided by the present invention, first, the rotating table 1 can be placed in the groove 4, and then the experimental instrument can be placed on the rotating table 1. If the experimental instrument needs to be repaired or cleaned, the experimental instrument needs to be rotated. At this time, the driving device 3 can be controlled to operate so that the driving device 3 drives the rotating table 1 to rotate in the groove 4, so as to synchronously drive the experimental instrument to rotate and change positions. When the experimental instrument is rotated to the required maintenance or cleaning position, the driving device 3 is controlled to stop running, and the table top of the fixed table 2 and the table top of the rotating table 1 are fixed to avoid the movement of the experimental instrument and the rotating table 1 during use, which may cause danger. Then, the experimental instrument can be repaired or cleaned. When the maintenance or cleaning operation of the experimental instrument is completed, the experimental instrument needs to be rotated again. First, the fixed relationship between the table top of the fixed table 2 and the table top of the rotating table 1 can be released, and then the above operation can be repeated to achieve the reset operation of the experimental instrument, so that the operator can perform normal experimental operations on the experimental instrument.

[0035] In summary, the rotatable test bench provided by the present invention can effectively improve the convenience of maintenance and internal cleaning of coal quality testing instruments, reduce the labor intensity of operators, and the device has a simple structure and is easy to use, and can be promoted for use.

[0036] On the basis of the above embodiment, preferably, the fixed platform 2 includes a fixed platform surface 21 and a fixed frame 22 for supporting the fixed platform surface 21, the fixed platform surface 21 and the fixed frame 22 are clamped at the top, and the connection between the two is coated with epoxy resin glue.

[0037] It should be noted that the fixed platform surface 21 can be set as a rectangular parallelepiped structure, and fasteners for engaging with the fixed frame 22 are set around the fixed platform surface 21. When the fixed platform 2 is installed, the fixed platform surface 21 can be buckled on the fixed frame 22 and bonded with epoxy resin glue to ensure that the fixed platform surface 21 and the fixed frame 22 are stably connected to prevent the fixed platform surface 21 from moving.

[0038] Preferably, the rotating table 1 includes a circular rotating platform surface 11 and a rotating frame 12 for supporting the rotating platform surface 11, the rotating platform surface 11 is arranged on the top of the rotating frame 12, and the connection between the two is coated with epoxy resin glue; the rotating frame 12 is a two-step structure, the outer periphery of the first step of the rotating frame 12 is provided with a track 13, and the outer periphery of the second step of the rotating frame 12 is provided with a rotating bearing 14, and the rotating bearing 14 is used to connect the rotating frame 12 and the fixed frame 22; the driving device 3 includes a gear for driving the track 13 to rotate and a motor for driving the gear to rotate forward and reverse, the gear is meshed with the track 13, and the motor is connected with the gear.

[0039] It should be noted that a circular rotating platform surface 11 can be set at the center of the fixed platform surface 21, and the rotating platform surface 11 and the fixed platform surface 21 are flush with each other to avoid the tilt of the experimental instrument. The rotating platform surface 11 and the rotating frame 12 can also be bonded into an integrated structure using epoxy resin glue, and the rotating frame 12 is a two-step structure. The first step can be installed with a track 13 for meshing with a gear, and the outer diameter of the second step is the same as the inner diameter of the rotating bearing 14, so that the second step can be embedded downward into the rotating bearing 14. A groove 4 for installing the rotating table 1 is provided in the middle of the fixed frame 22. The groove 4 is also distributed in two steps to facilitate matching with the track 13 and the rotating bearing 14. When performing the installation operation of the rotating table 1 and the fixed table 2, it is only necessary to embed the rotating bearing 14 into the corresponding position of the groove 4 to ensure that the rotating table 1 can rotate relative to the fixed table 2. For example, the rotating bearing 14 can be set as a thrust ball bearing to increase the axial bearing capacity of the rotating bearing 14 and avoid damage to the rotating bearing 14.

[0040] It should also be noted that the motor can be set as a high-torque slow-speed motor to ensure that the rotating operation of the rotating table 1 is carried out smoothly, thereby preventing the operator from being burned by the high-temperature instrument. Moreover, it is also more conducive to controlling the rotation speed and rotation angle of the rotating table 1 to ensure that the experimental instrument on the rotating table 1 rotates to the desired position. The gear is connected to the track 13 on the rotating frame 12. By adjusting the operation of the control motor, the forward and reverse rotation of the gear can be realized, and the rotation process of the rotating table 1 can be adjusted.

[0041] Preferably, the fixed platform surface 21 and the rotating platform surface 11 are both epoxy resin surfaces, and the fixed frame 22 and the rotating frame 12 are both steel frames.

[0042] It should be noted that setting both the fixed platform surface 21 and the rotating platform surface 11 as epoxy resin surfaces can effectively improve the corrosion resistance and heat resistance of the fixed platform surface 21 and the rotating platform surface 11, so as to avoid damage to the fixed platform surface 21 and the rotating platform surface 11 during the experiment. Making both the fixed frame 22 and the rotating frame 12 steel frames can effectively improve the bearing capacity of the fixed frame 22 and the rotating frame 12, and ensure that the fixed frame 22 and the rotating frame 12 effectively support large coal testing instruments.

[0043] Preferably, the rotating platform surface 11 is circumferentially provided with a horizontal support rod 5 for adjusting the horizontality of the rotating platform surface 11, and the horizontal support rod 5 includes a base 51, a support sleeve 52 and a support bolt 53. The support sleeve 52 is embedded in the rotating platform surface 11, and the base 51 is arranged at the bottom of the support bolt 53. The support bolt 53 and the support sleeve 52 are threadedly connected.

[0044] It should be noted that the entire mass of the large-scale coal testing instrument acts on the rotating bearing 14 and the horizontal support rod 5. Four horizontal support rods 5 can be arranged in sequence around the rotating platform surface 11, and the support sleeve 52 can be bonded to the bottom of the rotating platform surface 11 using epoxy resin glue, so that the platform surface of the support force-bearing part can be reinforced to prevent the support bolt 53 from being stripped. When the support bolt 53 is screwed into the support sleeve 52, the support bolt 53 and the base 51 are welded into one. Therefore, when it is necessary to adjust the horizontality of the rotating platform surface 11, the base 51 will rotate with the support bolt 53, and the base 51 can effectively increase the bottom force-bearing area of ​​the support bolt 53, so that the horizontal support rod 5 has a strong load-bearing capacity. When the rotating platform surface 11 rotates to the desired position, the height of the horizontal support rod 5 can be adjusted by adjusting the screw-in depth of the support bolt 53, thereby effectively adjusting the horizontality of the rotating platform surface 11, ensuring that the rotating platform surface 11 is in a horizontal state, so that each experimental instrument will not be offset or tilted.

[0045] Preferably, the outer diameter of the rotating platform surface 11 can be larger than the outer diameter of the rotating bearing 14, so that even if the four horizontal support rods 5 are lifted during the rotation process, the rotating platform surface 11 will not be overturned. When the rotating platform surface 11 is stationary, the horizontal support rods 5 are in a lowered state. At this time, the horizontal support rods 5 can increase the supporting force for the rotating platform surface 11, reduce the center force of the rotating bearing 14, and make the force of the overall structure more uniform. Moreover, the horizontal support rods 5 can effectively adjust the horizontality of the rotating platform surface 11 to ensure the stability of the rotating platform surface 11.

[0046] Preferably, the rotating platform surface 11 is provided with a level meter 6 for detecting whether the rotating platform surface 11 is in a horizontal state. The level meter 6 can effectively detect whether the rotating platform surface 11 and the experimental instrument are in a horizontal state, so that the operator can adjust the horizontal support rod 5 according to the detection result of the level meter 6 to make the rotating platform surface 11 in a stable placement state.

[0047] In actual use, the shape, structure, size, position, etc. of the fixed platform surface 21, fixed frame 22, rotating platform surface 11, rotating frame 12, horizontal support rod 5, level 6 and groove 4 can be determined according to actual conditions and actual needs.

[0048] On the basis of the above embodiment, preferably, the rotating platform surface 11 and the fixed platform surface 21 are connected by a fixing bolt 7, a dustproof buckle plate 8 is provided between the rotating platform surface 11 and the fixed platform surface 21, and a dust collecting trough 9 for collecting coal powder dust is provided below the dustproof buckle plate 8 and the fixing bolt 7.

[0049] It should be noted that, since the coal powder used in coal quality testing has a particle size of only 0.2 mm, smoke and coal powder will be generated during the coal quality testing process. Smoke and coal powder are very easy to fall into the gaps in the table, thereby affecting the operation of the rotating bearing 14, motor, gears and other components inside the test bench. Therefore, two dustproof buckle plates 8 can be set on the outer periphery of the rotating platform surface 11 with the fixing bolt 7 as the boundary. The two dustproof buckle plates 8 are symmetrical semicircular structures, and the dustproof buckle plates 8 are flush with the rotating platform surface 11. The two sides below the dustproof buckle plates 8 are concave dust collecting grooves 9. The dust collecting grooves 9 are used to collect the fallen smoke and coal powder. When performing the cleaning operation, the dust collecting grooves 9 can be directly cleaned with a vacuum cleaner.

[0050] It should also be noted that bar-shaped steel fixing bolts 7 are installed on both sides of the rotating platform surface 11. The fixing bolts 7 are used to connect the fixed platform surface 21 and the rotating platform surface 11 to prevent the rotating platform surface 11 from deflecting in the normal experimental state. In addition, a corresponding installation groove is provided below the fixing bolt 7 so that the fixing bolt 7 is flush with the rotating platform surface 11 after being lowered, which will not affect the aesthetics of the device. At the same time, a dust collecting groove 9 can be provided below the fixing bolt 7. The dust collecting groove 9 is used to collect the fallen smoke and coal powder, so that the dust collecting groove 9 can be directly cleaned with a vacuum cleaner in the subsequent process.

[0051] Preferably, a dust-proof brush 10 is provided at the connection gap between the rotating platform surface 11 and the fixed platform surface 21 to prevent dust from falling in.

[0052] It should be noted that there is usually a gap between the rotating platform surface 11 and the fixed platform surface 21 directly below the dustproof buckle plate 8, and the dustproof brush 10 is installed in the gap to prevent dust from falling into the rotating bearing 14, so as to effectively improve the use effect and service life of the rotating bearing 14. That is, by providing the dustproof buckle plate 8 and the dustproof brush 10, coal powder and smoke can be effectively prevented from entering the interior of the experimental table.

[0053] Preferably, one end of the fixing bolt 7 is fixedly connected to the rotating platform surface 11, and the other end is clamped to the fixed platform surface 21, and the length of the fixing bolt 7 is greater than the width of the dustproof buckle plate 8. Therefore, when the rotating platform surface 11 needs to be rotated, the operator only needs to lift the fixing bolt 7 without removing the dustproof buckle plate 8 to realize the disassembly operation of the rotating platform surface 11 and the fixed platform surface 21.

[0054] Preferably, a storage cabinet 23 for storing instrument spare parts is provided below the fixed platform 2 to improve the functionality of the device and make it more convenient for operators to perform experimental operations.

[0055] In actual use, the shape, structure, size, etc. of the fixing bolt 7, the dustproof buckle plate 8, the dustproof brush 10 and the dust collecting groove 9 can be determined according to actual conditions and actual needs.

[0056] It should also be noted that when using the rotatable experimental table provided by the present invention, if it is necessary to inspect or clean the experimental instrument, it is necessary to rotate the experimental instrument. At this time, the fixing bolts 7 on both sides of the rotating platform surface 11 can be lifted, and the four horizontal support rods 5 can be loosened to release the fixed relationship between the rotating table 1 and the fixed table 2. Then, the driving device 3 is used to drive the rotating table 1 to rotate. When the experimental instrument is rotated to the required inspection or cleaning position, the driving device 3 is controlled to stop running, and the four horizontal support rods 5 on the rotating platform surface 11 are unscrewed to ensure that the table tops of the fixed table 2 and the table tops of the rotating table 1 are temporarily fixed to avoid the movement of the experimental instrument and the rotating table 1 during use and cause danger. Then, the experimental instrument can be inspected or cleaned. When the maintenance and cleaning operation of the experimental instrument is completed, the four horizontal support rods 5 can be loosened, and the above operation can be repeated to make the rotating platform surface 11 rotate back to its original position, and then the fixing bolts 7 are lowered, and the horizontal support rods 5 are used to adjust the horizontality of the rotating platform surface 11, so that the operator can continue to use the experimental instrument for normal experimental operation. During this period, the horizontal support rods 5 can be adjusted according to the level 6 to ensure that the rotating platform surface 11 is in a horizontal state. Compared with conventional fixed test benches, this device has the following advantages:

[0057] 1. It greatly facilitates the inspection, maintenance and cleaning of heavy-duty coal testing instruments;

[0058] 2. The rotation process of the rotating table 1 is controlled by a slow motor to ensure that the rotation speed and angle of the rotating table 1 can be accurately controlled, and the rotation process is smooth to prevent people from being scalded by high-temperature instruments;

[0059] 3. By adding the horizontal support rod 5 and the level 6, the operator can adjust the horizontal state of the experimental instrument at any time;

[0060] 4. Both the fixed frame 22 and the rotating frame 12 are made of steel, so that the device has strong load-bearing capacity and high stability;

[0061] 5. The test bench is designed as an integrated system with modular installation, which is convenient for transportation and installation. Moreover, this test bench is simple and elegant, with few parts, all of which are mature workpieces, and the failure rate of parts is low, which effectively reduces the maintenance risk and maintenance cost of the device. Moreover, the overall manufacturing process requirements of the device are not high, the parts are cheap, and the overall cost is low.

[0062] It should be noted that the first step and the second step mentioned in the present application document, where the first and the second are only used to distinguish the different positions, have no order of precedence.

[0063] In addition, it should be noted that the directions or positional relationships indicated by "up and down", "inside and outside", etc. in this application are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of simplifying the description and facilitating understanding, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0064] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. Any combination of all embodiments provided by the present invention is within the protection scope of this invention and will not be described in detail here.

[0065] The above is a detailed introduction to the rotatable test bench provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A rotatable experimental table, It is characterized in that include: A rotating table (1) for carrying an experimental instrument, a fixed table (2) for supporting the rotating table (1), and a driving device (3), wherein the fixed table (2) is provided with a groove (4) for accommodating the rotating table (1), and the driving device (3) is connected to the rotating table (1) to drive the rotating table (1) to rotate in the groove (4), the table top of the fixed table (2) is flush with the table top of the rotating table (1), and the two are detachably connected; the fixed table (2) comprises a fixed platform surface (21) and a fixed frame (22) for supporting the fixed platform surface (21), the top of the fixed platform surface (21) and the fixed frame (22) are clamped, and the connection between the two is coated with epoxy resin glue; the rotating table (1) comprises a circular rotating platform surface (11) and a rotating frame (12) for supporting the rotating platform surface (11), the rotating platform surface (11) is arranged on the top of the rotating frame (12), and the connection between the two is coated with epoxy resin glue; The rotating platform surface (11) and the fixed platform surface (21) are connected via a fixing bolt (7); a dustproof plate (8) is provided between the rotating platform surface (11) and the fixed platform surface (21); dust collecting grooves (9) for collecting coal dust are provided below the dustproof plate (8) and the fixing bolt (7); a dustproof brush (10) for preventing dust from falling in is provided at a connecting gap between the rotating platform surface (11) and the fixed platform surface (21); one end of the fixing bolt (7) is fixedly connected to the rotating platform surface (11), and the other end is clamped to the fixed platform surface (21); the length of the fixing bolt (7) is greater than the width of the dustproof plate (8).

2. The rotatable test bench according to claim 1, It is characterized in that The rotating frame (12) is a two-step structure, a track (13) is provided on the outer periphery of the first step of the rotating frame (12), a rotating bearing (14) is sleeved on the outer periphery of the second step of the rotating frame (12), and the rotating bearing (14) is used to connect the rotating frame (12) and the fixed frame (22); The driving device (3) comprises a gear for driving the track (13) to rotate and a motor for driving the gear to rotate forward and reversely, the gear is meshed with the track (13), and the motor is connected to the gear.

3. The rotatable test bench according to claim 2, It is characterized in that The fixed platform surface (21) and the rotating platform surface (11) are both epoxy resin surfaces, and the fixed frame (22) and the rotating frame (12) are both steel frames.

4. The rotatable test bench according to claim 2, It is characterized in that The rotating platform surface (11) is provided with a horizontal support rod (5) along the circumferential direction for adjusting the horizontality of the rotating platform surface (11); the horizontal support rod (5) comprises a base (51), a support sleeve (52) and a support bolt (53); the support sleeve (52) is embedded in the rotating platform surface (11); the base (51) is arranged at the bottom of the support bolt (53); the support bolt (53) and the support sleeve (52) are threadedly connected.

5. The rotatable test bench according to any one of claims 2 to 4, It is characterized in that The rotating platform surface (11) is provided with a level meter (6) for detecting whether the rotating platform surface (11) is in a horizontal state.

6. The rotatable test bench according to any one of claims 1 to 5, It is characterized in that A storage cabinet (23) for storing instrument spare parts is provided below the fixing platform (2).

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