CN214553737U - Rotatable experiment table - Google Patents

Abstract

The utility model discloses a rotatable laboratory bench, include: a mesa parallel and level for bearing laboratory glassware's revolving stage, a fixed station and the drive arrangement for supporting the revolving stage, the fixed station is equipped with the recess that is used for holding the revolving stage, and drive arrangement and revolving stage are connected to the drive revolving stage is at the recess internal rotation, the mesa of fixed station and the mesa parallel and level of revolving stage, and the two is for dismantling the connection. Through using the utility model provides a rotatable laboratory bench can effectively improve the maintenance of coal quality chemical examination laboratory glassware and the convenience that inside cleaned, alleviates operating personnel's intensity of labour, and this device simple structure, convenient to use can use widely.

Description

Rotatable experiment table

Technical Field

The utility model relates to a coal quality chemical examination technical field, more specifically says, relates to a rotatable laboratory bench.

Background

In the prior art, coal quality testing is an extremely important work in industries such as electric power and coal, and the like, and the coal analysis items generally comprise items such as full moisture, air separation, heating value, element analysis and the like. The test temperature of most coal chemical test items is about 800-.

Most of these instruments are large in size, heavy in weight and compact in internal structure design, when the instruments break down and need to be overhauled, operators are difficult to move the instruments, and the instruments are generally placed against a wall due to ventilation and smoke exhaust requirements, so that the operators are difficult to maintain or overhaul parts on the back and two sides of the instruments. Moreover, most coal quality chemical examination test table tops are fixed table tops, are mostly cement-made table tops or customized chemical experiment table tops, and the fixed table tops only consider the influences of factors such as stability and corrosion resistance, and finally, lead to operating personnel to be difficult to overhaul and clean the interior of the coal quality chemical examination experimental apparatus.

In summary, how to improve the convenience of maintenance and internal cleaning of the coal quality testing experimental instrument is a problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a rotatable laboratory bench, it can effectively improve the maintenance of coal quality chemical examination laboratory glassware and the convenience that inside cleaned, alleviates operating personnel's intensity of labour, and this device simple structure, convenient to use can use widely.

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

a rotatable laboratory bench comprising: a fixed station and drive arrangement for bearing laboratory glassware's revolving stage, being used for supporting the revolving stage, the fixed station is equipped with and is used for holding the recess of revolving stage, drive arrangement with the revolving stage is connected, in order to drive the revolving stage is in the recess internal rotation, the mesa of fixed station with the mesa parallel and level of revolving stage, and the two is for dismantling the connection.

Preferably, the fixed station includes the fixed platform face and is used for supporting the fixed frame of fixed platform face, the fixed platform face with fixed frame's top joint, the junction of the two scribbles the epoxy glue.

Preferably, the rotating platform comprises a circular rotating platform surface and a rotating frame for supporting the rotating platform surface, the rotating platform surface is arranged at the top of the rotating frame, and the joint of the rotating platform surface and the rotating frame is coated with epoxy resin glue; the rotating frame is of a two-stage step structure, a track is arranged on the outer periphery of a first stage step of the rotating frame, a rotating bearing is sleeved on the outer periphery of a second stage step of the rotating frame, and the rotating bearing is used for connecting the rotating frame and the fixed frame;

the driving device comprises a gear used for driving the track to rotate and a motor used for driving the gear to rotate positively and negatively, the gear is meshed with the track, and the motor is connected with the gear.

Preferably, the fixed platform face with the rotary platform face is the epoxy mesa, fixed frame with rotary frame is the steel frame.

Preferably, the rotary platform face is equipped with along circumference and is used for adjusting the horizontal support pole of the levelness of rotary platform face, horizontal support pole includes base, support sleeve and supporting bolt, support sleeve inlays to be located in the rotary platform face, the base is located supporting bolt's bottom, supporting bolt with support sleeve is threaded connection.

Preferably, the rotary platform surface is provided with a level meter for detecting whether the rotary platform surface is in a horizontal state.

Preferably, the rotary platform face with the fixed platform face passes through the gim peg and connects, the rotary platform face with be equipped with dustproof buckle between the fixed platform face, dustproof buckle with the below of gim peg all is equipped with the dust collecting tank that is used for collecting the buggy dust.

Preferably, the joint gap between the rotary platform surface and the fixed platform surface is provided with a dustproof brush for preventing dust from falling.

Preferably, the one end of gim peg with rotary platform face fixed connection, the other end with fixed platform face joint, the length of gim peg is greater than the width of dustproof buckle.

Preferably, a storage cabinet for storing instrument spare parts is arranged below the fixed table.

In use the utility model provides a during rotatable laboratory bench, at first, can place the revolving stage in the recess, place laboratory glassware on the revolving stage again, if need overhaul or clean operation to laboratory glassware, then need rotate laboratory glassware, at this moment, can control the drive arrangement operation, make drive arrangement drive the revolving stage at the recess internal rotation, rotate with synchronous drive laboratory glassware, the transform position, when laboratory glassware gos to required maintenance or clean position when, control drive arrangement stall, and fix the mesa of fixed station and revolving stage, take place to remove and cause danger with laboratory glassware and revolving stage in avoiding the use, then, can overhaul or clean operation to laboratory glassware. After the maintenance or the clean operation of laboratory glassware, need rotate the operation once more to the laboratory glassware, can remove the fixed relation of the mesa of fixed station and the mesa of revolving stage at first, and then repeat above-mentioned operation again to realize the operation that resets of laboratory glassware, so that operating personnel carries out normal experimental operation to the laboratory glassware.

To sum up, the utility model provides a rotatable laboratory bench, it can effectively improve the maintenance of coal quality chemical examination laboratory glassware and the convenience that inside cleaned, alleviates operating personnel's intensity of labour, and this device simple structure, convenient to use can use widely.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a rotatable laboratory bench provided in the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic view of a portion of the structure of the rotary table top and the fixed table top when the fixing bolts at the connection point are opened;

FIG. 4 is a schematic view of a part of the structure of the dust-proof buckle plate when the dust-proof buckle plate is buckled;

fig. 5 is a schematic structural view of the horizontal support rod.

In fig. 1-5:

1 is a rotating platform, 11 is a rotating platform surface, 12 is a rotating frame, 13 is a track, 14 is a rotating bearing, 2 is a fixed platform, 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 gauge, 7 is a fixing bolt, 8 is a dustproof buckle plate, 9 is a dust collecting groove, and 10 is a dustproof brush.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The core of the utility model is to provide a rotatable laboratory bench, it can effectively improve the maintenance of coal quality chemical examination laboratory glassware and the convenience that inside cleaned, alleviates operating personnel's intensity of labour, and this device simple structure, convenient to use can use widely.

Please refer to fig. 1 to 5.

This embodiment provides a rotatable laboratory bench, includes: a mesa parallel and level for bearing laboratory glassware revolving stage 1, fixed station 2 and the drive arrangement 3 that is used for supporting revolving stage 1, fixed station 2 are equipped with the recess 4 that is used for holding revolving stage 1, and drive arrangement 3 and revolving stage 1 are connected to drive revolving stage 1 is at recess 4 internal rotation, fixed station 2's mesa and revolving stage 1, and the two is for dismantling the connection.

It should be noted that, when the instrument is out of order and needs to be overhauled or cleaned, an operator can remove the connection between the rotating table 1 and the fixed station 2, and then drive the rotating table 1 to rotate to a proper position by using the driving device 3, and then fix the rotating table 1 and the fixed station 2, so that the fault instrument can be overhauled and cleaned, and after the overhauling and cleaning are finished, the above operation is repeated, and the instrument is turned back to the original position. Compared with a conventional fixed test bed, the device greatly facilitates the overhaul, maintenance and sanitary cleaning operation of the heavy coal chemical testing instrument, and the rotating process of the rotating platform 1 can be controlled by the driving device 3, so that the labor intensity of operators can be reduced.

In actual operation, the shape, structure, size, material, and the like of the rotary table 1, the fixed table 2, and the driving device 3 can be determined according to actual conditions and actual requirements.

Use the utility model provides a during rotatable laboratory bench, at first, can place revolving stage 1 in recess 4, place laboratory glassware on revolving stage 1 again, if need overhaul or clean operation to laboratory glassware, then need rotate laboratory glassware, at this moment, can control drive arrangement 3 operation, make drive arrangement 3 drive revolving stage 1 at the 4 internal rotations of recess, rotate with synchronous drive laboratory glassware, the transform position, when laboratory glassware arrives to required maintenance or clean position, control drive arrangement 3 stall, and fix the mesa of mesa and revolving stage 1 of fixed station 2, take place to remove and cause danger with revolving stage 1 in avoiding using process laboratory glassware, then, can overhaul or clean operation to laboratory glassware. After the maintenance or the clean operation of laboratory glassware, need rotate the operation once more to the laboratory glassware, can remove the fixed relation of the mesa of fixed station 2 and the mesa of revolving stage 1 at first, and then repeat above-mentioned operation again to realize the operation that resets of laboratory glassware, so that operating personnel carries out normal experimental operation to the laboratory glassware.

To sum up, the utility model provides a rotatable laboratory bench, it can effectively improve the maintenance of coal quality chemical examination laboratory glassware and the convenience that inside cleaned, alleviates operating personnel's intensity of labour, and this device simple structure, convenient to use can use widely.

On the basis of the above embodiment, preferably, the fixing table 2 includes a fixing table surface 21 and a fixing frame 22 for supporting the fixing table surface 21, the fixing table surface 21 and the top of the fixing frame 22 are clamped, and the joint between the fixing table surface 21 and the fixing frame 22 is coated with epoxy resin glue.

It should be noted that, the fixing platform surface 21 may be a rectangular parallelepiped structure, and fasteners for fastening with the fixing frame 22 are disposed around the fixing platform surface 21. When installing the operation to fixed station 2, can detain fixed platform face 21 on fixed frame 22 to utilize the epoxy glue to bond, in order to guarantee fixed platform face 21 and fixed frame 22 stable connection, avoid fixed platform face 21 to remove.

Preferably, the rotating platform 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 joint of the rotating platform surface and the rotating frame 12 is coated with epoxy resin glue; the rotating frame 12 is of a two-stage step structure, a track 13 is arranged on the outer periphery of a first stage step of the rotating frame 12, a rotating bearing 14 is sleeved on the outer periphery of a second stage step of the rotating frame 12, and the rotating bearing 14 is used for connecting the rotating frame 12 and a 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 backward, the gear is meshed with the track 13, and the motor is connected with the gear.

It should be noted that, a circular rotary table surface 11 may be disposed at the center of the fixed table surface 21, and the rotary table surface 11 and the fixed table surface 21 are flush with each other, so as to avoid the tilting of the experimental apparatus. The rotary platform surface 11 and the rotary frame 12 can also be bonded into an integral structure by using epoxy resin glue, the rotary frame 12 is of a two-stage step structure, a track 13 for meshing with a gear can be installed on a first stage step, and the outer diameter of a second stage step is the same as the inner diameter of the rotary bearing 14, so that the second stage step can be downwards embedded into the rotary bearing 14. The middle of the fixed frame 22 is provided with a groove 4 for mounting the rotating platform 1, the groove 4 is also distributed in two steps so as to be matched with the track 13 and the rotating bearing 14, when the mounting operation of the rotating platform 1 and the fixed platform 2 is carried out, only the rotating bearing 14 needs to be embedded into the corresponding position of the groove 4, and the rotating platform 1 can be ensured to rotate relative to the fixed platform 2. For example, the rotary bearing 14 may be provided as a thrust ball bearing to improve the axial bearing force of the rotary bearing 14 and prevent the rotary bearing 14 from being damaged.

It should be further noted that the motor can be set as a large-torque slow-speed motor, so that the rotating operation of the rotating platform 1 is ensured to be stably performed, the operator is further prevented from being scalded by a high-temperature instrument, the rotating speed and the rotating angle of the rotating platform 1 can be controlled more favorably, and the experimental instrument on the rotating platform 1 is ensured to rotate to a required position. The gear is connected with the track 13 on the rotating frame 12, and the forward rotation and the reverse rotation of the gear can be realized by adjusting the running condition of the control motor, so that the rotating process of the rotating platform 1 is adjusted.

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

It should be noted that, all set up fixed platform face 21 and rotary platform face 11 as the epoxy mesa, can effectively improve the corrosion resisting property and the heat resistance of fixed platform face 21 and rotary platform face 11 to avoid fixed platform face 21 and rotary platform face 11 to appear the phenomenon of damaging in the experimentation. The fixed frame 22 and the rotating frame 12 are both made of steel frames, so that the bearing capacity of the fixed frame 22 and the rotating frame 12 can be effectively improved, and the fixed frame 22 and the rotating frame 12 can effectively support large-scale coal chemical testing instruments.

Preferably, the rotary platform surface 11 is provided with a horizontal support rod 5 along the circumferential direction for adjusting the levelness of the rotary platform surface 11, 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 rotary platform surface 11, the base 51 is arranged at the bottom of the support bolt 53, and the support bolt 53 and the support sleeve 52 are connected by a thread.

It should be noted that the entire mass of the large coal chemical testing apparatus acts on the rotary bearing 14 and the horizontal support bar 5. Can set gradually four horizontal support rods 5 around rotary platform face 11 to utilize epoxy to glue and bond support sleeve 52 in rotary platform face 11's below, can consolidate the platform face that supports the atress part like this, in order to prevent that support bolt 53 from taking off the silk. After the support bolts 53 are screwed into the support sleeves 52, the support bolts 53 are welded with the base 51 to form a whole, so that when the levelness of the rotary platform surface 11 needs to be adjusted, the base 51 can rotate along with the support bolts 53, and the base 51 can effectively increase the bottom stress area of the support bolts 53, so that the horizontal support rod 5 has strong bearing capacity. When the rotary platform face 11 rotates to the required position, the screw-in depth of the supporting bolt 53 can be adjusted to adjust the height of the horizontal supporting rod 5, so that the levelness of the rotary platform face 11 is effectively adjusted, the rotary platform face 11 is ensured to be in a horizontal state, and the phenomenon of deviation and inclination of each experimental instrument cannot occur.

Preferably, the outer diameter of the turntable surface 11 may be larger than the outer diameter of the rotary bearing 14, so that the turntable surface 11 does not have a possibility of overturning even if the four horizontal support rods 5 are lifted during rotation. And when rotary platform face 11 was static, horizontal support rod 5 was in the state of putting down, and horizontal support rod 5 this moment can increase the holding power for rotary platform face 11, reduced swivel bearing 14's central atress, made overall structure's atress more even, and in addition, horizontal support rod 5 can effectively adjust rotary platform face 11's levelness, ensured rotary platform face 11's stability.

Preferably, the rotary table top 11 is provided with a level 6 for detecting whether the rotary table top 11 is in a horizontal state. The level gauge 6 can effectively detect out whether rotary platform face 11 and laboratory glassware are in the horizontality to operating personnel adjusts horizontal support rod 5 according to the testing result of level gauge 6, so that rotary platform face 11 is in steady state of placing.

In the actual application process, according to the actual situation and the actual requirement, the shapes, structures, sizes, positions, and the like of the fixed platform surface 21, the fixed frame 22, the rotary platform surface 11, the rotary frame 12, the horizontal support rod 5, the level 6, and the groove 4 can be determined.

On the basis of above-mentioned embodiment, preferably, rotary platform face 11 and fixed platform face 21 pass through gim peg 7 and connect, are equipped with dustproof buckle 8 between rotary platform face 11 and the fixed platform face 21, and the below of dustproof buckle 8 and gim peg 7 all is equipped with the dust collecting tank 9 that is used for collecting the buggy dust.

It should be noted that, because the particle size of the coal powder used in the coal quality test is only 0.2mm, smoke dust, coal powder and the like are generated in the coal quality test process, and the smoke dust and the coal powder are very easy to fall into the gap of the table top, thereby affecting the operation of the rotary bearing 14, the motor, the gear and other components inside the experiment table. Therefore, can use the gim peg 7 to set up two dustproof buckle 8 as the border at the peripheral part of rotary platform face 11, two dustproof buckle 8 are the semicircular structure of symmetry to, dustproof buckle 8 and rotary platform face 11 parallel and level, the below both sides of dustproof buckle 8 are recessed dust collecting tank 9, and dust collecting tank 9 is used for collecting the smoke and dust and the buggy that fall down, when clearing up the operation, directly utilize the dust catcher to clean dust collecting tank 9 can.

It should also be noted that, the steel gim peg 7 of bar is installed to the both sides of rotary platform face 11, and gim peg 7 is used for connecting fixed platform face 21 and rotary platform face 11 to prevent that rotary platform face 11 from taking place the phenomenon of deflecting when normal experimental state, moreover, the mounting groove that corresponds is established to gim peg 7 below, so that gim peg 7 put down back and 11 parallel and level of rotary platform face, can not influence the aesthetic measure of device. Meanwhile, a dust collecting groove 9 can be arranged below the fixing bolt 7, and the dust collecting groove 9 is used for collecting the dust and the coal dust collected under the dust collecting groove, so that the dust collecting groove 9 can be cleaned by directly using a dust collector in the subsequent process.

Preferably, a dust brush 10 for preventing dust from falling is arranged at a connection gap between the rotary platform surface 11 and the fixed platform surface 21.

It should be noted that, a gap is usually formed between the rotating platform surface 11 and the fixed platform surface 21 right below the dustproof buckle 8, and the dustproof brush 10 is installed in the gap, so that dust can be prevented from falling into the rotating bearing 14, and the use effect and the service life of the rotating bearing 14 can be effectively improved. Also through setting up dustproof buckle 8 and dustproof brush 10, can effectively stop buggy and smoke and dust to get into inside the laboratory bench.

Preferably, one end of the fixing bolt 7 is fixedly connected with the rotating platform surface 11, the other end of the fixing bolt is clamped with the fixing platform surface 21, and the length of the fixing bolt 7 is larger than the width of the dustproof buckle plate 8. Therefore, when the rotating platform surface 11 needs to rotate, an operator only needs to lift up the fixing bolt 7 without detaching the dustproof buckle plate 8, and the detaching operation of the rotating platform surface 11 and the fixing platform surface 21 can be realized.

Preferably, a storage cabinet 23 for storing instrument spare parts is arranged below the fixed table 2, so that the functionality of the device is improved, and the experimental operation of an operator is facilitated.

In the actual application process, the shapes, structures, sizes and the like 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 requirements.

Still need explain, in using the utility model provides a during rotatable laboratory bench, if need overhaul or clean the operation to the laboratory bench, then need rotate the laboratory bench, at this moment, can lift up the gim peg 7 of 11 both sides on the rotary platform face, and loosen four horizontal support rod 5, in order to remove the fixed relation of revolving stage 1 and fixed station 2, then, utilize drive arrangement 3 to drive revolving stage 1 and rotate, when the laboratory bench rotates to required maintenance or clean position, control drive arrangement 3 stall, and with four horizontal support rod 5 on the rotary platform face 11 spin down, can guarantee that the mesa of fixed station 2 and the mesa of revolving stage 1 are temporarily fixed, in order to avoid using in-process laboratory bench and revolving stage 1 to take place to remove and cause danger, then can carry out the maintenance or the operation of cleaning of laboratory bench. After the maintenance of laboratory glassware cleaned the operation, then can unclamp four horizontal support rod 5, repeat above-mentioned operation again to make rotary platform face 11 change the normal position back, put down gim peg 7 again, and utilize horizontal support rod 5 adjustment rotary platform face 11's levelness, so that operating personnel continues to utilize laboratory glassware to carry out normal experimental operation, and during, can be according to 6 adjustment horizontal support rod 5 of spirit level, in order to ensure that rotary platform face 11 is in the horizontality. Compared with a conventional fixed test bed, the device has the following advantages:

1. the overhaul, maintenance and sanitary cleaning of the heavy coal chemical testing instrument are greatly facilitated;

2. the rotating process of the rotating platform 1 is controlled by a slow motor, so that the rotating speed and the rotating angle of the rotating platform 1 can be accurately controlled, the rotating process is stable, and personnel can be prevented from being scalded by a high-temperature instrument;

3. by adding the horizontal support rod 5 and the level gauge 6, an operator can adjust the horizontal state of the experimental instrument at any time;

4. the fixed frame 22 and the rotating frame 12 are both steel frames, so that the device has strong bearing capacity and high stability;

5. the experiment table is designed in an integrated mode, is installed in a modularized mode, and is convenient to transport and install. And the experiment table is simple and elegant, has few parts, each part is a mature workpiece, has low part failure rate, and effectively reduces the maintenance risk and the maintenance cost of the device. And the whole manufacturing process requirement of the device is not high, the parts are cheap, and the whole manufacturing cost is low.

It should be noted that, in the present application, the first step and the second step are mentioned, wherein, the first step and the second step are only used for distinguishing the position difference and are not sequentially distinguished.

It should be noted that the directions and positional relationships indicated by "upper and lower sides", "inside and outside" and the like in the present application are based on the directions and positional relationships shown in the drawings, and are only for the convenience of simplifying the description and facilitating the understanding, but do not indicate or imply that the device or the element to be referred to must have a specific direction, be constructed in a specific direction and operate, and thus, should not be construed as limiting the present invention.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The utility model provides an arbitrary compound mode of all embodiments all is in this utility model's a protection scope, does not do here and gives unnecessary details.

It is right above that the utility model provides a rotatable laboratory bench introduces in detail. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims (10)

1. A rotatable laboratory bench, comprising: a revolving stage (1), be used for supporting for bearing the weight of laboratory glassware fixed station (2) and drive arrangement (3) of revolving stage (1), fixed station (2) are equipped with and are used for holding recess (4) of revolving stage (1), drive arrangement (3) with revolving stage (1) are connected, in order to drive revolving stage (1) is in recess (4) internal rotation, the mesa of fixed station (2) with the mesa parallel and level of revolving stage (1), and the two is for dismantling the connection.

2. The rotatable laboratory table according to claim 1, characterized in that, the fixed platform (2) comprises a fixed platform surface (21) and a fixed frame (22) for supporting the fixed platform surface (21), the fixed platform surface (21) and the top of the fixed frame (22) are clamped, and the joint of the two is coated with epoxy resin glue.

3. The rotatable laboratory table according to claim 2, wherein the rotary table (1) comprises a circular rotary table surface (11) and a rotary frame (12) for supporting the rotary table surface (11), the rotary table surface (11) is arranged on the top of the rotary frame (12), and the joint of the rotary table surface and the rotary frame (12) is coated with epoxy resin glue; the rotating frame (12) is of a two-stage step structure, a track (13) is arranged on the outer periphery of a first step of the rotating frame (12), a rotating bearing (14) is sleeved on the outer periphery of a second step of the rotating frame (12), and the rotating bearing (14) is used for connecting 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 positively and negatively, the gear is meshed with the track (13), and the motor is connected with the gear.

4. A rotatable laboratory bench according to claim 3 characterized in that the fixed platform surface (21) and the rotating platform surface (11) are epoxy table surfaces and the fixed frame (22) and the rotating frame (12) are steel frames.

5. The rotatable experiment table of claim 3, wherein the rotary platform surface (11) is circumferentially provided with a horizontal support rod (5) for adjusting the levelness of the rotary 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 rotary platform surface (11), the base (51) is arranged at the bottom of the support bolt (53), and the support bolt (53) and the support sleeve (52) are in threaded connection.

6. Rotatable laboratory table according to one of the claims 3 to 5, characterized in that the rotary table top (11) is provided with a level (6) for detecting whether the rotary table top (11) is in a horizontal position.

7. The rotatable experiment table according to any one of claims 3 to 5, wherein the rotating platform surface (11) and the fixed platform surface (21) are connected through a fixing bolt (7), a dustproof buckle plate (8) is arranged between the rotating platform surface (11) and the fixed platform surface (21), and dust collecting grooves (9) for collecting dust of coal dust are formed below the dustproof buckle plate (8) and the fixing bolt (7).

8. The rotatable laboratory table according to claim 7, characterized in that, the connecting gap between the rotatable platform surface (11) and the fixed platform surface (21) is provided with a dust brush (10) for preventing dust from falling.

9. The rotatable experiment table of claim 8, wherein one end of the fixing bolt (7) is fixedly connected with the rotating platform surface (11), the other end of the fixing bolt is clamped with the fixing platform surface (21), and the length of the fixing bolt (7) is larger than the width of the dustproof buckle plate (8).

10. Rotatable laboratory table according to one of claims 1 to 5, characterized in that a storage cabinet (23) for storing instrument spare parts is arranged below the stationary table (2).

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