CN212050247U

CN212050247U - Special cantilever crane for nuclear power station

Info

Publication number: CN212050247U
Application number: CN202020246111.1U
Authority: CN
Inventors: 杨孝先
Original assignee: Hefei Kiwi Heavy Machinery Co ltd
Current assignee: Hefei Kiwi Heavy Machinery Co ltd
Priority date: 2020-03-03
Filing date: 2020-03-03
Publication date: 2020-12-01
Anticipated expiration: 2030-03-03

Abstract

The utility model relates to a hoisting accessory technical field specifically is a special cantilever crane of nuclear power station, including stand and cantilever, the top fixedly connected with swing drive portion of stand, the inner chamber of swing drive portion is provided with first motor, the base has been cup jointed after the power take off end of first motor runs through the upper surface of swing drive portion, the passageway has been seted up between the both sides face of base, the cantilever slides and cup joints in the passageway, the upper surface of cantilever is seted up flutedly along the axial, the front wall of recess inner chamber is provided with the rack, the upper surface fixed mounting of base has the second motor, the power take off end of second motor has cup jointed the driving gear after running through the top surface of passageway, the driving gear meshes with the rack and matches, the bottom surface department of passageway rotates installs a plurality of cylinders, the pivot of cylinder is perpendicular with the cantilever, and the outer wall of cylinder is tangent; the problem of in the passageway be close to the side cantilever crane's of installation cantilever crane cantilever be difficult to carry out 360 rotations is solved.

Description

Special cantilever crane for nuclear power station

Technical Field

The utility model relates to a hoisting accessory technical field specifically is a special cantilever crane of nuclear power station.

Background

The cantilever crane belongs to an industrial part and belongs to a light working strength crane. The cantilever crane generally comprises a vertical column, a cantilever and an electric hoist; the bottom end of the upright post is usually fixedly connected to the base, and the electric hoist moves linearly left and right on the cantilever and lifts a heavy object. The cantilever crane generally has the advantages of light dead weight, large span, large hoisting capacity, flexible use, economy, durability and the like, so the cantilever crane is widely applied to the industrial production process. In nuclear power plants, a cantilever crane is also a common device.

At present, a cantilever crane is usually installed at a position close to one side edge of a channel, and the requirement that the cantilever rotates 360 degrees in the channel is difficult to meet due to the long length of the cantilever. At present, in order to solve the problems, a telescopic cantilever is often used, but the telescopic cantilever is formed by sleeving a multi-section cylindrical structure, so that the overall volume of the cantilever is increased, and the strength of the cantilever is influenced to a certain degree.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a special cantilever crane of nuclear power station for the cantilever that is close to side installation cantilever crane in solving the passageway is difficult to carry out 360 rotatory problems.

In order to achieve the above object, the utility model provides a following technical scheme: a cantilever crane special for a nuclear power station comprises a vertical column and a cantilever, wherein the top end of the vertical column is fixedly connected with a rotary driving part, the inner cavity of the rotary driving part is provided with a first motor, the power output end of the first motor penetrates through the upper surface of the rotary driving part and then is sleeved with a base, a channel is arranged between the two side surfaces of the base, the cantilever is sleeved in the channel in a sliding way, the upper surface of the cantilever is provided with a groove along the axial direction, the front wall of the inner cavity of the groove is provided with a rack, the upper surface of the base is fixedly provided with a second motor, the power output end of the second motor penetrates through the top surface of the channel and is sleeved with a driving gear, the driving gear is meshed and matched with the rack, a plurality of rollers are rotatably arranged on the bottom surface of the channel, the rotating shaft of the roller is vertical to the cantilever, and the outer wall of the roller is tangent to the lower surface of the cantilever.

Preferably, the top surface of the channel is located the rear of the driving gear is rotatably provided with a driven gear, the driven gear is meshed with the driving gear, the rear wall of the inner cavity of the groove is also provided with a rack, and the rack is meshed with the driven gear.

Preferably, the non-hoisting end of the cantilever is fixedly connected with a balancing weight, and the section size of the balancing weight is larger than that of the cantilever.

Preferably, the diameter of the cross section of the rotary driving part is larger than that of the cross section of the upright post, and the diameter of the cross section of the rotary driving part is equal to that of the cross section of the base.

Preferably, the depth of the groove is greater than the thickness of the driving gear and the driven gear.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model relates to a cantilever crane, when the first motor drive base in the rotation driving portion drove the cantilever and rotates, the second motor passed through the driving gear and the rack drive cantilever slides in the passageway to reduce the radius of rotation of cantilever, thereby satisfy in the passageway and be close to the cantilever of side installation cantilever crane and can carry out 360 rotatory requirements.

2. The utility model relates to a when the cantilever slided in the passageway, cantilever lower surface and cylinder roll relatively, have reduced the gliding frictional force of cantilever.

Drawings

Fig. 1 is a schematic overall front view structure diagram of the present invention;

FIG. 2 is a schematic cross-sectional view A-A of FIG. 1 according to the present invention;

FIG. 3 is a schematic side view of the base of the present invention;

FIG. 4 is a schematic cross-sectional view of the cross-sectional view B-B of FIG. 3 according to the present invention;

fig. 5 is an enlarged schematic view of the structure of fig. 1 at C according to the present invention;

fig. 6 is an enlarged schematic view of the structure at D in fig. 1 according to the present invention.

In the figure: 1-upright column; 2-a cantilever; 21-a counterweight block; 22-a groove; 23-a rack; 3-a rotation driving part; 31-a first motor; 4-a base; 41-channel; 42-a drive gear; 43-driven gear; 44-a roller; 5-a second motor.

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.

Referring to fig. 1-6, the present invention provides a technical solution, a cantilever crane for a nuclear power station, including an upright 1 and a cantilever 2, a rotation driving portion 3 is fixedly connected to a top end of the upright 1, a first motor 31 is disposed in an inner cavity of the rotation driving portion 3, a base 4 is sleeved on a power output end of the first motor 31 after penetrating through an upper surface of the rotation driving portion 3, a channel 41 is disposed between two side surfaces of the base 4, the cantilever 2 is slidably sleeved in the channel 41, a groove 22 is axially disposed on an upper surface of the cantilever 2, a rack 23 is disposed on a front wall of an inner cavity of the groove 22, a second motor 5 is fixedly mounted on an upper surface of the base 4, a driving gear 42 is sleeved on a top surface of the channel 41, the driving gear 42 is engaged with the rack 23, a plurality of rollers 44 are rotatably mounted on a bottom surface of the channel 41, a rotation shaft of the rollers 44 is perpendicular, and the outer wall of the roller 44 is tangent to the lower surface of the boom 2.

In summary, when the first motor 31 in the rotary driving part 3 drives the cantilever 2 to rotate at a space-limited place through the base 4, the second motor 5 drives the driving gear 42 to rotate, so that the driving gear 42 drives the cantilever 2 to slide in the channel 41 through the meshing relationship with the rack 23 on the front wall of the groove 22; at the same time, the lower surface of the cantilever 2 and the roller 44 rotate relatively, thereby reducing the sliding friction of the cantilever 2; the sliding of the boom 2 along the channel 41 allows the radius of rotation of the boom 2 to be greatly reduced, thereby enabling the lifting end of the boom 2 to rotate 360 °.

In this embodiment, the top surface of the channel 41 is rotatably provided with a driven gear 43 at the rear of the driving gear 42, the driven gear 43 is meshed and matched with the driving gear 42, the rear wall of the inner cavity of the groove 22 is also provided with a rack 23, and the rack 23 is meshed and matched with the driven gear 43; when the cantilever 2 is used, the second motor 5 drives the driving gear 42 to rotate, the driving gear 42 drives the driven gear 43 to rotate, the driving gear 42 and the driven gear 43 respectively drive the cantilever 2 to slide in the channel through the racks 23 on the front wall and the rear wall of the groove 22, and therefore the cantilever 2 can slide smoothly and stably.

In the embodiment, the non-hoisting end of the cantilever 2 is fixedly connected with a balancing weight 21, and the section size of the balancing weight 21 is larger than that of the cantilever 2; when the device is used, the balancing weight 21 can be used for balancing the stress at two ends of the cantilever 2 and can also provide the limiting effect of the cantilever 2 sliding in the channel 41.

In the embodiment, the diameter of the cross section of the rotary driving part 3 is larger than that of the cross section of the upright post 1, and the diameter of the cross section of the rotary driving part 3 is equal to that of the cross section of the base 4; when the support device is used, after a space for installing the first motor 31 is reserved inside the rotary driving part 3, the side wall of the rotary driving part has a certain thickness so as to ensure the support strength.

In this embodiment, the depth of the groove 22 is greater than the thickness of the driving gear 42 and the driven gear 43; so that the lower surfaces of the driving gear 42 and the driven gear 43 can be prevented from rubbing against the bottom surface of the groove 22 in use.

The working principle is as follows: when the device is used, the first motor 31 in the rotary driving part 3 drives the cantilever 2 to rotate at a space limited place through the base 4, the second motor 5 drives the driving gear 42 to rotate, and the driving gear 42 drives the driven gear 43 to rotate; the driving gear 42 and the driven gear 43 respectively drive the cantilever 2 to slide smoothly in the channel through the racks 23 on the front wall and the rear wall of the groove 22; at the same time, the lower surface of the cantilever 2 and the roller 44 rotate relatively, thereby reducing the sliding friction of the cantilever 2; the sliding of the boom 2 along the channel 41 allows the radius of rotation of the boom 2 to be greatly reduced, thereby enabling the lifting end of the boom 2 to rotate 360 °.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a special cantilever crane of nuclear power station, includes stand (1) and cantilever (2), its characterized in that: the top end of the upright post (1) is fixedly connected with a rotary driving part (3), an inner cavity of the rotary driving part (3) is provided with a first motor (31), a power output end of the first motor (31) penetrates through the upper surface of the rotary driving part (3) and then is sleeved with a base (4), a channel (41) is formed between two side surfaces of the base (4), the cantilever (2) is slidably sleeved in the channel (41), the upper surface of the cantilever (2) is axially provided with a groove (22), the front wall of the inner cavity of the groove (22) is provided with a rack (23), the upper surface of the base (4) is fixedly provided with a second motor (5), a power output end of the second motor (5) penetrates through the top surface of the channel (41) and then is sleeved with a driving gear (42), and the driving gear (42) is meshed with the rack (23), the bottom surface of the channel (41) is rotatably provided with a plurality of rollers (44), the rotating shaft of each roller (44) is perpendicular to the cantilever (2), and the outer wall of each roller (44) is tangent to the lower surface of the cantilever (2).

2. The cantilever crane special for the nuclear power plant as claimed in claim 1, wherein: the top surface of passageway (41) is located the rear department of driving gear (42) rotates and installs driven gear (43), driven gear (43) with driving gear (42) meshing matches, the back wall of recess (22) inner chamber also is provided with rack (23), and rack (23) with driven gear (43) meshing matches.

3. The cantilever crane special for the nuclear power plant as claimed in claim 1, wherein: the non-hoisting end of the cantilever (2) is fixedly connected with a balancing weight (21), and the section size of the balancing weight (21) is larger than that of the cantilever (2).

4. The cantilever crane special for the nuclear power plant as claimed in claim 1, wherein: the diameter of the cross section of the rotary driving part (3) is larger than that of the cross section of the upright post (1), and the diameter of the cross section of the rotary driving part (3) is equal to that of the cross section of the base (4).

5. The cantilever crane special for the nuclear power plant as claimed in claim 1, wherein: the depth of the groove (22) is greater than the thickness of the driving gear (42) and the driven gear (43).