CN219445042U - Dismounting tool - Google Patents

Abstract

The utility model discloses a disassembly and assembly tool applied to disassembly and assembly of a pumped storage unit brake, which comprises a lifting platform and a transfer platform, wherein the lifting platform is used for adjusting the height of the brake along the vertical direction; the transfer platform is connected to the lifting platform and used for transferring the brake. Therefore, the safe transfer of the brake can be realized without dismantling the rotor of the pumped storage unit, and the time for replacing and overhauling the brake is shortened.

Description

Dismounting tool

Technical Field

The utility model relates to the technical field of installation and maintenance of pumped storage units, in particular to a disassembly and assembly tool.

Background

Under the double-carbon background of carbon peak and carbon neutralization, the pumped storage power station is developed into a current mainstream situation in order to be matched with various power generation modes such as photovoltaic, wind power, nuclear power and the like. The pumped storage unit has the characteristics of high rotating speed, frequent start and stop and the like, and particularly has extremely high unit operation strength in important electricity-saving holidays, peak-meeting summer, peak-meeting winter and wind-light storage areas, and can be started and stopped for more than ten times a day and operated for more than 20 hours a day, so that efficient overhaul work is an important measure for guaranteeing stable operation of the unit.

For a pumped storage unit, a brake is a heavy weight for ensuring the safe and stable operation of the unit. Because of the design characteristics of the pumped storage unit, a single brake weighs about 500Kg and is positioned right below the wind tunnel inner rotor, and the standing height of a person is only less than 80cm. When the unit is installed, the brake is firstly installed, then the generator rotor is stacked and installed, the gap between the brake and the rotor is only about 1.5cm, and the periphery of the brake is distributed over pipelines, brackets and the like. For a set with frequent start and stop, the brake has high operation strength and high failure rate, and once the brake is damaged and needs to be replaced, the problems of high disassembly and assembly difficulty, difficult transportation, long time consumption, high risk coefficient and the like are faced.

Disclosure of Invention

In view of the above, the utility model provides a disassembly and assembly tool which can safely transport the brake without dismantling the rotor of the pumped storage unit, and shortens the time required for replacing and overhauling the brake.

The embodiment of the utility model provides a disassembly and assembly tool applied to disassembly and assembly of a pump storage unit brake, which comprises a lifting platform and a transfer platform, wherein the lifting platform is used for adjusting the height of the brake along the vertical direction; the transfer platform is connected to the lifting platform and used for transferring the brake.

Further, the lifting platform comprises a base, a first supporting device and a first frame, wherein a plurality of bolt assemblies are arranged on the base and are used for connecting the base to the pumped storage unit; the first supporting device is arranged above the base and can stretch and retract along the vertical direction; the first frame is arranged above the first supporting device and is used for carrying the brake.

Further, the first supporting device comprises a first jack and a first sleeve, the first jack is arranged along the vertical direction, and the bottom of the first jack is connected to the base; the first sleeve is connected to the top of the first jack, a first supporting rod is arranged at the bottom of the first frame along the vertical direction, and the first supporting rod is inserted into the first sleeve.

Further, the transfer platform comprises a first support, a second support and an objective table, wherein the first support is connected to the first frame, and the first support can be matched with the first supporting device to stretch and retract along the vertical direction; the top of the second bracket is hinged with the first bracket so that the second bracket can rotate relative to the first bracket, and a guide rail is arranged on the second bracket; the objective table sets up on the guide rail, and the objective table can be followed the guide rail and slided.

Further, the first bracket comprises a second frame, a third frame and a second jack, the second frame comprises a second supporting rod and a first connecting rod, the second supporting rod is arranged in parallel along the vertical direction, the first connecting rod is arranged along the horizontal direction, sliding grooves are formed in the opposite sides of the second supporting rod, and the first connecting rod is connected with the second supporting rod; the third frame comprises a third supporting rod, a second connecting rod and a third connecting rod, wherein the third supporting rod is arranged in parallel along the vertical direction, the second connecting rod and the third connecting rod are arranged along the horizontal direction, the third supporting rod is arranged in a sliding chute in a sliding mode, the second connecting rod is connected with the third supporting rod and the first frame, and the third connecting rod is connected with the third supporting rod; the second jack is connected to the first connecting rod and the third connecting rod so that the third frame can be lifted and lowered relative to the second frame.

Further, the second bracket comprises a fourth supporting rod, a fourth connecting rod and a connecting shaft, the fourth supporting rod is arranged in parallel, and the guide rail is positioned on the fourth supporting rod; the fourth connecting rod is connected with the fourth supporting rod; the top of third bracing piece has seted up first connecting hole, and the second connecting hole has been seted up at the top of fourth bracing piece, and the connecting axle wears to locate first connecting hole and second connecting hole.

Further, the transfer platform further comprises a first sliding block, a second sliding block and a second supporting device, wherein the first sliding block is slidably clamped on the guide rail, and the first sliding block is hinged with the rear part of the objective table; the second sliding block is clamped on the guide rail in a sliding way and is positioned below the first sliding block; the second supporting device comprises a threaded rod and a threaded sleeve, the top of the threaded rod is hinged with the front part of the objective table, the bottom of the threaded sleeve is hinged with the second sliding block, and the threaded rod is screwed on the threaded sleeve.

Further, the edge of the objective table is provided with a fence.

Further, the first bracket further comprises a pulley device, the pulley device is connected to the top of the third supporting rod, and the pulley device is used for driving the objective table to slide along the guide rail.

Further, the first jack and the second jack are screw jacks.

The technical scheme provided by the embodiment of the utility model has the beneficial effects that at least: the dismounting tool comprises a lifting platform and a transferring platform, wherein the lifting platform is used for adjusting the height of the brake along the vertical direction; the transfer platform is connected to the lifting platform and used for transferring the brake. Therefore, the safe transfer of the brake can be realized without dismantling the rotor of the pumped storage unit, and the time for replacing and overhauling the brake is shortened.

Wherein, all adopt frame-type structure such as first frame, first support and second support, realize lift platform's lift function through setting up first jack, realize the lift function of first support through setting up the second jack, simple structure, low in manufacturing cost.

The objective table is hinged to the first sliding block, the objective table is hinged to the threaded rod, the threaded sleeve is hinged to the second sliding block, and the second supporting device is arranged in a matched mode, so that the objective table has an angle adjusting function, and the objective table is kept horizontal all the time when the objective table transport brake is used.

The foregoing description is only an overview of the technical solutions of the present application, and may be implemented according to the content of the specification in order to make the technical means of the present application more clearly understood, and in order to make the above-mentioned and other objects, features and advantages of the present application more clearly understood, the following detailed description of the present application will be given.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to designate like parts throughout the figures. Wherein:

FIG. 1 shows a schematic installation of a brake in a pumped-hydro energy storage unit;

FIG. 2 illustrates a schematic installation of a removal tool according to one embodiment of the present utility model;

FIG. 3 is a schematic view of a disassembly tool (region II in FIG. 2) of the embodiment of FIG. 2;

FIG. 4 shows a schematic structural view of the transfer platform of the embodiment of FIG. 2;

fig. 5 shows a schematic diagram of the structure of the stage of the embodiment shown in fig. 2.

The correspondence between the reference numerals and the component names in fig. 1 to 5 is:

1 lifting platform, 11 base, 111 bolt component, 12 first supporting device, 121 first jack, 122 first sleeve, 13 first frame, 131 first supporting rod, 2 transfer platform, 21 first bracket, 22 second bracket, 221 fourth supporting rod, 222 fourth connecting rod, 223 connecting shaft, 224 second connecting hole, 23 objective table, 231 threaded rod, 232 screw sleeves, 233 enclosing blocks, 24 guide rails, 241 first sliding blocks, 242 second sliding blocks, 3 pumped storage units, 31 brakes, 32 piers, 411 second supporting rods, 412 first connecting rods, 413 sliding grooves, 421 third supporting rods, 422 second connecting rods, 423 third connecting rods, 424 first connecting holes, 43 second jacks and 44 pulley devices.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced in other ways than those described herein, and therefore the scope of the present utility model is not limited to the specific embodiments disclosed below.

A disassembly tool according to some embodiments of the present utility model is described below with reference to fig. 1 to 5.

As shown in fig. 1, in the conventional pumped-storage unit 3, a single brake 31 weighs about 500Kg and is mounted on a buttress 32 directly below a generator rotor in a wind tunnel, and the standing height h1 of a person is only less than 80cm. Because the brake 31 is firstly installed and then the rotors are stacked and installed when the unit is installed, the rotors are required to be removed when the brake 31 is disassembled, a large amount of manpower and material resources are consumed, the unit backup time is increased, and the cost is high. On the other hand, the clearance h2 between the brake 31 and the rotor is only about 1.5cm, and the periphery of the brake 31 is covered with pipelines, brackets and the like, so that the environment is complex, and if the brake 31 is difficult to directly assemble and disassemble, the risk factor is high, and equipment damage and personal injury are easily caused.

As shown in fig. 2 to 3, the dismounting tool provided by the embodiment of the utility model is applied to dismounting a brake 31 of a pumped storage unit 3, and comprises a lifting platform 1 and a transferring platform 2, wherein the lifting platform 1 is used for adjusting the height of the brake 31 along the vertical direction, so that the brake 31 is positioned at a reasonable height position, avoids complex pipelines and provides an operable space for staff; the transfer platform 2 is connected to the lifting platform 1, and the transfer platform 2 is used for transferring the brake 31, so that the new and old brakes 31 can be safely and laborsaving transferred. Thus, the brake 31 can be safely transported without dismantling the rotor of the pumped-storage unit 3, and the time required for replacing and repairing the brake 31 can be shortened.

Specifically, taking the case of detaching the brake 31, firstly installing the lifting platform 1, adjusting the lifting platform 1 to be positioned at the same height as the buttress 32, detaching a fastening bolt connected with the buttress 32 by the brake 31 and a pipeline accessory of the brake 31 body, moving the brake 31 to the lifting platform 1, and adjusting the lifting platform 1 to a proper height again; the transfer platform 2 is then installed such that the transfer platform 2 is in height with the lifting platform 1, and the brake 31 is moved to the transfer platform 2, and the brake 31 is moved to the ground through the transfer platform 2. When the brake 31 is mounted, the operation is reversed according to the above steps.

It will be appreciated that the dismounting tool provided by the embodiment of the utility model can be applied to dismounting the brake 31, and other devices with large weight and inconvenient dismounting and transferring can be dismounted.

As shown in fig. 3, the lifting platform 1 comprises a base 11, a first supporting device 12 and a first frame 13, wherein a plurality of bolt assemblies 111 are arranged on the base 11, and the bolt assemblies 111 are used for connecting the base 11 to the pumped storage unit 3, so that the lifting platform 1 is ensured to be stable, and dangers caused by the falling of the lifting platform 1 are avoided. Specifically, the base 11 is attached to the frame at the lower portion of the pump storage unit 3 using the bolt assembly 111 such that the lift platform 1 is positioned adjacent the abutment 32 to facilitate movement of the brake 31 to the lift platform 1. Wherein, bolt assembly 111 can quick assembly disassembly, is convenient for adjust the assembly and disassembly tools near different brakes 31, transports brake 31.

It will be appreciated that the specific number of bolt assemblies 111 is not limited herein and that the mounting of the base 11 to the pumped-storage unit 3 need only be accomplished. Preferably, 4 bolt assemblies 111 are arranged and are uniformly distributed in the center of the base 11, so that the lifting platform 1 can be ensured to be stable, and meanwhile, the difficulty in disassembly and assembly caused by excessive bolt assemblies 111 can be avoided.

As shown in fig. 3, the first supporting device 12 is disposed above the base 11, and the first supporting device 12 can stretch and retract along a vertical direction to realize a lifting function of the lifting platform 1; the first frame 13 is disposed above the first supporting device 12, and the first frame 13 is used for carrying the brake 31. Specifically, the first frame 13 is composed of a plurality of connecting rods arranged in the horizontal direction, parallel to each other or perpendicular to each other, and has a simple structure and low manufacturing cost.

As shown in fig. 3, the first supporting device 12 includes a first jack 121 and a first sleeve 122, the first jack 121 is disposed along a vertical direction, a bottom of the first jack 121 is connected to the base 11, and the height of the lifting platform 1 can be adjusted by adjusting the first jack 121; the first sleeve 122 is connected to the top of the first jack 121, the first support rod 131 is arranged at the bottom of the first frame 13 along the vertical direction, the first support rod 131 is inserted into the first sleeve 122, the first frame 13 and the first jack 121 can be ensured to be firmly connected, and the situation that the brake 31 falls off due to falling of the first frame 13 is avoided, so that danger is caused is avoided.

It will be appreciated that the number of first jacks 121 and first sleeves 122 is not limited here, but only the first frame 13 and first jacks 121 need be secured. Preferably, 4 first jacks 121 and 4 first sleeves 122 are provided, the first jacks 121 are welded to the base 11, and the first sleeves 122 are welded above the first jacks 121.

As shown in fig. 4, the transfer platform 2 includes a first bracket 21, a second bracket 22 and an objective table 23, the first bracket 21 is connected to the first frame 13, and the first bracket 21 can be matched with the first supporting device 12 to stretch and retract along the vertical direction, so that the height of the transfer platform 2 is consistent with the height of the lifting platform 1, and the brake 31 can be conveniently moved between the lifting platform 1 and the transfer platform 2; the top of the second support 22 is hinged with the first support 21 so that the second support 22 can rotate relative to the first support 21, and the second support 22 can be matched with the first supports 21 at different heights by adjusting the inclination angle between the second support 22 and the ground so as to keep the stability of the transfer platform 2; the second support 22 is provided with a guide rail 24, the objective table 23 is arranged on the guide rail 24, and the objective table 23 can slide along the guide rail 24, so that the brake 31 can be conveniently moved to the ground or transported to the lifting platform 1.

It can be appreciated that by adjusting the height of the first support 21 and rotating the second support 22 in cooperation with the guide rail 24 at a suitable inclination angle, the difficulty in moving the brake 31 by using the stage 23 can be reduced while ensuring the stability of the transfer platform 2, and the brake 31 can be transferred in a labor-saving and rapid manner.

As shown in fig. 4, the first bracket 21 includes a second frame, a third frame and a second jack 43, the second frame includes a second support rod 411 disposed in parallel along a vertical direction and a first connecting rod 412 disposed along a horizontal direction, a chute 413 is disposed on an opposite side of the second support rod 411, the first connecting rod 412 is connected to the second support rod 411, and the first connecting rod 412 is used for reinforcing the second support rod 411. The second frame is manufactured by the second supporting rod 411 and the first connecting rod 412, so that the structure is simple, and the manufacturing cost is low.

As shown in fig. 4, the third frame includes a third support bar 421 disposed in parallel in a vertical direction, a second connection bar 422 disposed in a horizontal direction, and a third connection bar 423, the third support bar 421 being slidably disposed in a chute 413 such that the third frame can slide up and down with respect to the second frame, thereby realizing a lifting function of the first bracket 21; the second connection rod 422 is connected to the third support rod 421 and the first frame 13 so as to drag the stopper 31 along the second connection rod 422, thereby realizing the transfer of the stopper 31 between the first frame 13 and the stage 23; the third connecting rod 423 is connected to the third supporting rod 421 and used for reinforcing the third supporting rod 421.

Wherein, two second connecting rods 422 are arranged, which can ensure that the brake 31 keeps balance on the second connecting rods 422 and has simple structure; the third frame is manufactured by adopting the third supporting rod 421, the second connecting rod 422 and the third connecting rod 423, and has simple structure and low manufacturing cost.

As shown in fig. 4, the second jack 43 is connected to the first connecting rod 412 and the third connecting rod 423 to enable the third frame to be lifted relative to the second frame, that is, the first connecting rod 412 and the third connecting rod 423 can provide an acting point for the second jack 43 in addition to the connection function, so as to enable the first bracket 21 to be lifted by the second jack 43. It will be appreciated that the first connecting rod 412 is located at a lower position on the second supporting rod 411, so that the first bracket 21 can be ensured to have a sufficient lifting distance, and the third frame is prevented from being separated from the second frame.

As shown in fig. 4, the second bracket 22 includes a fourth support bar 221, a fourth connection bar 222, and a connection shaft 223, the fourth support bar 221 being disposed in parallel, and the guide rail 24 being located at the fourth support bar 221 such that the stage 23 can slide along the guide rail 24; the fourth connecting rod 222 is connected to the fourth supporting rod 221, and is used for fixing the fourth supporting rod 221; the top of two third bracing pieces 421 has seted up the first connecting hole 424 of relative setting respectively, and the second connecting hole 224 of relative setting has been seted up respectively to the top of two fourth bracing pieces 221, and connecting axle 223 wears to locate first connecting hole 424 and second connecting hole 224 for second support 22 can rotate for first support 21.

Specifically, in the pumped storage unit 3 with different models, the installation positions of the brakes 31 are different, and by arranging the connecting shafts 223, when the lifting platform 1 and the first bracket 21 are positioned at different heights, the balance of the transfer platform 2 can be kept by rotating the second bracket 22. On the other hand, after the brake 31 is moved to the lifting platform 1, the brake 31 can be quickly and labor-saving transported to the ground by adjusting the heights of the lifting platform 1 and the first bracket 21 and then adjusting the included angle between the second bracket 22 and the ground in a matching manner.

As shown in fig. 5, the transfer platform 2 further includes a first slider 241, a second slider 242, and a second supporting device, which are used for enabling the actuator 31 to slide along the guide rail 24 by the stage 23; the first slider 241 is slidably clamped on the guide rail 24, and the first slider 241 is also hinged with the rear part of the objective table 23; the second slider 242 is slidably engaged with the guide rail 24, and the second slider 242 is located below the first slider 241; the second support means comprises a threaded rod 231 and a threaded sleeve 232 for supporting the stage 23 such that the stage 23 remains balanced; the top of the threaded rod 231 is hinged to the front of the stage 23, and the bottom of the threaded sleeve 232 is hinged to the second slider 242, and the threaded rod 231 is screwed to the threaded sleeve 232 to adjust the length of the second supporting means.

The objective table 23 is hinged to the first slider 241, the objective table 23 is hinged to the threaded rod 231, the threaded sleeve 232 is hinged to the second slider 242, and the second supporting device is arranged in a matched manner, so that the objective table 23 has an angle adjusting function, and the objective table 23 is kept horizontal all the time when the objective table 23 is used for transferring the brake 31.

Specifically, taking the example of lowering the height of the first support 21, the second support 22 needs to be adjusted at this time so that the bottom of the second support 22 is away from the first support 21 by a certain distance, which makes the front of the stage 23 at a higher position relative to the rear, and the length of the second support device is shortened by rotating the threaded rod 231, so that the stage 23 is restored to the horizontal state, and the transportation of the brake 31 is facilitated. Accordingly, when the height of the first support 21 is raised, the threaded rod 231 is rotated to increase the length of the second supporting means, so that the stage 23 can be restored to the horizontal state.

As shown in fig. 5, the edge of the stage 23 is provided with a fence 233, which can prevent the stopper 31 from falling down during transportation to cause danger.

As shown in fig. 4, the first bracket 21 further includes a pulley device 44, where the pulley device 44 is connected to the top of the third supporting rod 421, and the pulley device 44 can be used with a chain block to drive the stage 23 carrying the brake 31 to slide along the guide rail 24. It will be appreciated that the enclosure 233 is similarly configured in a frame-like manner, which facilitates the attachment of the stage 23 to the hook of the chain block, and is simple in construction and low in manufacturing cost.

As shown in fig. 3 to 4, the first jack 121 and the second jack 43 are screw jacks, which generally have a sufficient load and facilitate height adjustment at low cost.

In the description of the present utility model, the term "plurality" means two or more, unless explicitly defined otherwise, the orientation or positional relationship indicated by the terms "upper", "lower", etc. are orientation or positional relationship based on the drawings, merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model; the terms "coupled," "mounted," "secured," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present utility model, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In the present utility model, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. The utility model provides a dismounting tool is applied to dismouting pumped storage unit stopper which characterized in that includes:

the lifting platform (1) is used for adjusting the height of the brake (31) along the vertical direction;

the transfer platform (2), transfer platform (2) connect in lift platform (1), transfer platform (2) are used for transferring stopper (31).

2. Disassembly tool according to claim 1, characterized in that the lifting platform (1) comprises:

a base (11), wherein a plurality of bolt assemblies (111) are arranged on the base (11), and the bolt assemblies (111) are used for connecting the base (11) to the pumped storage unit (3);

the first supporting device (12) is arranged above the base (11), and the first supporting device (12) can stretch and retract along the vertical direction;

and a first frame (13), wherein the first frame (13) is arranged above the first supporting device (12), and the first frame (13) is used for carrying the brake (31).

3. The dismounting tool as claimed in claim 2, characterized in that the first support means (12) comprise:

the first jack (121), the first jack (121) is set up along the vertical direction, the bottom of the first jack (121) is connected to the said base (11);

the first sleeve (122), first sleeve (122) connect in the top of first jack (121), the bottom of first frame (13) is provided with first bracing piece (131) along vertical direction, first bracing piece (131) are inserted and are located first sleeve (122).

4. A disassembly tool according to claim 3, wherein the transfer platform (2) comprises:

the first support (21) is connected to the first frame (13), and the first support (21) can be matched with the first supporting device (12) to stretch in the vertical direction;

the top of the second bracket (22) is hinged with the first bracket (21) so that the second bracket (22) can rotate relative to the first bracket (21), and a guide rail (24) is arranged on the second bracket (22);

and a stage (23), wherein the stage (23) is arranged on the guide rail (24), and the stage (23) can slide along the guide rail (24).

5. The dismounting tool as set forth in claim 4, wherein the first bracket (21) includes:

the second frame comprises second support rods (411) which are arranged in parallel along the vertical direction and first connecting rods (412) which are arranged along the horizontal direction, sliding grooves (413) are formed in opposite sides of the second support rods (411), and the first connecting rods (412) are connected with the second support rods (411);

the third frame comprises a third supporting rod (421) arranged in parallel along the vertical direction, a second connecting rod (422) and a third connecting rod (423) arranged along the horizontal direction, the third supporting rod (421) is slidably arranged in the sliding groove (413), the second connecting rod (422) is connected with the third supporting rod (421) and the first frame (13), and the third connecting rod (423) is connected with the third supporting rod (421);

and a second jack (43), wherein the second jack (43) is connected to the first connecting rod (412) and the third connecting rod (423) so that the third frame can be lifted and lowered relative to the second frame.

6. The disassembly tool according to claim 5, wherein the second bracket (22) comprises:

the fourth supporting rods (221), the fourth supporting rods (221) are arranged in parallel, and the guide rail (24) is positioned on the fourth supporting rods (221);

a fourth connecting rod (222), the fourth connecting rod (222) being connected to the fourth supporting rod (221);

the connecting shaft (223), first connecting hole (424) has been seted up at the top of third bracing piece (421), second connecting hole (224) has been seted up at the top of fourth bracing piece (221), connecting shaft (223) wear to locate first connecting hole (424) with second connecting hole (224).

7. The dismounting tool as claimed in claim 4, characterized in that the transfer platform (2) further comprises:

a first slider (241), wherein the first slider (241) is slidably clamped on the guide rail (24), and the first slider (241) is also hinged with the rear part of the objective table (23);

a second slider (242), wherein the second slider (242) is slidably clamped on the guide rail (24), and the second slider (242) is positioned below the first slider (241);

the second supporting device comprises a threaded rod (231) and a threaded sleeve (232), the top of the threaded rod (231) is hinged to the front portion of the objective table (23), the bottom of the threaded sleeve (232) is hinged to the second sliding block (242), and the threaded rod (231) is screwed to the threaded sleeve (232).

8. The removal tool of claim 4, wherein:

the edge of the objective table (23) is provided with a fence (233).

9. The dismounting tool as set forth in claim 5, wherein the first bracket (21) further includes:

and the pulley device (44), the pulley device (44) is connected to the top of the third supporting rod (421), and the pulley device (44) is used for driving the objective table (23) to slide along the guide rail (24).

10. The removal tool of claim 5, wherein:

the first jack (121) and the second jack (43) are screw jacks.