CN104453340B - Derrick head and derrick device - Google Patents

Derrick head and derrick device Download PDF

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Publication number
CN104453340B
CN104453340B CN201410653032.1A CN201410653032A CN104453340B CN 104453340 B CN104453340 B CN 104453340B CN 201410653032 A CN201410653032 A CN 201410653032A CN 104453340 B CN104453340 B CN 104453340B
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CN
China
Prior art keywords
holding pole
column
derrick
cantilever
pole head
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Application number
CN201410653032.1A
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CN104453340A (en
Inventor
马增茂
刘靖国
程金梁
王海波
唐志海
宋岷山
田文敏
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State Grid Corp of China SGCC
Beijing Electric Power Transmission and Transformation Co
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State Grid Corp of China SGCC
Beijing Electric Power Transmission and Transformation Co
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Application filed by State Grid Corp of China SGCC, Beijing Electric Power Transmission and Transformation Co filed Critical State Grid Corp of China SGCC
Priority to CN201410653032.1A priority Critical patent/CN104453340B/en
Publication of CN104453340A publication Critical patent/CN104453340A/en
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/34Arrangements for erecting or lowering towers, masts, poles, chimney stacks, or the like
    • E04H12/342Arrangements for stacking tower sections on top of each other

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Electric Cable Installation (AREA)

Abstract

The invention discloses a derrick head and a derrick device and relates to the technical field of engineering machines. The derrick head and the derrick device aim at solving the problem that eccentric force on a derrick is too large when an iron tower component is lifted and ensuring the stability and the construction safety of the overall derrick. According to the main technical scheme, the derrick head comprises a stand column and pulley set supporting frames, the stand column is of a hollow structure and is installed at the upper end of a derrick body, two through holes which are arranged oppositely are formed in the outer wall of the stand column, the connecting line of the two through holes penetrates through the center of the stand column, and the two through holes are formed in the same horizontal plane. The two pulley set supporting frames are installed on the parts, below the through holes, of the outer wall of the stand column, and pulley assembly installation parts are arranged at the tail ends of the pulley set supporting frames. The invention further discloses the derrick device which comprises the derrick body and the derrick head, and the derrick head is arranged at the top end of the derrick body. The derrick head and the derrick device are mainly used for erecting of high-voltage iron towers and the like in the electric transmission line construction, and stability and the construction safety are good.

Description

A kind of holding pole head and holding pole device
Technical field
The present invention relates to technical field of engineering machinery, more particularly to a kind of holding pole head and holding pole device.
Background technology
In transmission line construction, it is often necessary to set up high voltage iron tower etc., high voltage iron tower is usually to be by some steel poles The dimetric steel tower that tower material assembles.Set up high pressure brandreth when, it is necessary to first ground build up basis and column foot, then by Step builds tower material component upwards, when high voltage iron tower is set up to certain altitude, in order to by each component it is safe be transported to erection Height is, it is necessary to by holding pole device (that is, pole) as the lifting device for aiding in.
Existing holding pole device generally comprises the body of rod and holding pole head, and body of rod main body is the structure of angle steel composition, and holding pole head sets Put on body of rod top, specifically, the top design of holding pole head has hanging hole or pulling eye for connection pole bracing wire, middle part cantilever part Be provided with two sets of cantilevers, cantilever end is provided with assembly pulley, by steel wire rope be used as drawstring by pulling eye and ground or with The column foot main material of the high voltage iron tower bottom built up is fixedly connected, during tower erection, using the tackling system being arranged in assembly pulley, Complete the lifting of iron tower construction member.
When above-mentioned technical scheme is performed, inventor has found at least there is following technical problem:
First, tackling system be pulley assembly due to being arranged in the end of cantilever, positioned at the side of pole, lift by crane steel tower structure During part, the eccentricity pressure caused to pole is very big, is highly detrimental to the overall stability of pole, after being used for multiple times for a long time, may Pole opposite side drawstring can be caused to damage or even break, cause construction accident, in some instances it may even be possible to the problems such as producing pole to incline.
Secondly, in work progress, usually can be due to the limitation of lifting side-lower orographic condition, it is impossible to arrange that traction sets Standby, hauling block group steel wire rope etc., at this moment then needs to set the angle pulley of many places on tower body, transfers them to suitable position Put, arrangement is complicated, difficulty of construction is very big.
The content of the invention
In view of this, the embodiment of the present invention provides a kind of holding pole head and holding pole device, and main purpose is to solve lifting steel tower During component, the excessive problem of the eccentric force that is caused to holding pole device, it is ensured that the overall stability of holding pole device and working security.
To reach above-mentioned purpose, present invention generally provides following technical scheme:
On the one hand, a kind of holding pole head is the embodiment of the invention provides, including:
Column, the column is hollow structure, and installed in the body of rod upper end, its outer wall offers two for being oppositely arranged By hole, described two lines by hole pass through the center of the column, and positioned at same level;
Assembly pulley support frame, the assembly pulley support frame is two, is separately mounted to outside two columns passed through below hole On wall, the end of the assembly pulley support frame is provided with pulley assembly installation portion.
The upper surface level height of the pulley assembly installed in foregoing holding pole head, the pulley assembly installation portion is higher than institute State by the lower end in hole, less than the upper end by hole.
Foregoing holding pole head, the end of the assembly pulley support frame is also equipped with support roller assembly, the support roller assembly upper end Level height higher than the pulley assembly upper surface, less than the upper end by hole, outside the support roller of the support roller assembly Edge is more than the distance of the pulley assembly outer rim and column center with the distance at column center.
Foregoing holding pole head, the holding pole head also includes base, and the base passes through the first thrust bearing with column lower end Connection, the base lower end is arranged on the body of rod upper end;Wherein, first thrust bearing includes:
Lower bearing set, the lower bearing set is arranged on the inwall of the column bottom,
Thrust bearing body, the outer ring of the thrust bearing body is arranged on lower bearing and covers inwall,
Datum axle, the datum axle top is arranged on the inner ring of thrust bearing body, and the lower end of the datum axle is arranged on On base.
Foregoing holding pole head, is also equipped with base cantilever between the base and column, the base cantilever is at least three It is individual, circumferentially and uniformly it is arranged on the datum axle, the end of the base cantilever is provided with pulling eye.
Foregoing holding pole head, the holding pole head also includes lower cantalever, and the lower cantalever at least two is circumferential and uniform On the column outer wall below the assembly pulley support frame, the end of the lower cantalever is provided with pulling eye.
Foregoing holding pole head, the holding pole head also includes upper cantilever, and the upper cantilever is at least three, circumferentially and uniformly Installed in the upper end of the column, the end of the upper cantilever is provided with pulling eye.
Foregoing holding pole head, the assembly pulley support frame includes two supporting plates of vertical parallel arrangement, described two Connecting plate is connected between supporting plate, the connecting plate is vertical with two supporting plates respectively.
Foregoing holding pole head, the upper cantilever includes:
Upper cantilever body, the pulling eye is arranged on the end of upper cantilever body;
Second thrust bearing, second thrust bearing includes:
Upper cantilever bearing holder (housing, cover), the front end of the upper cantilever body is arranged on the outer wall of the upper cantilever bearing holder (housing, cover);
Thrust bearing body, the outer ring of the thrust bearing body is arranged on the inwall of the upper cantilever bearing holder (housing, cover);
Upper cantilever axle, the upper cantilever axle top is arranged on the inner ring of the thrust bearing body, under the upper cantilever axle Portion is arranged on column upper end.
Foregoing holding pole head, the upper cantilever also includes cone bearing body, and the outer ring of the cone bearing body is arranged on institute The inwall of upper cantilever bearing holder (housing, cover) is stated, and positioned at the top of the thrust bearing body, the inner ring of the cone bearing body is outstanding with upper The upper end of arm axle is mutually fixed.
On the other hand, the embodiment of the present invention also provides a kind of holding pole device, including
The body of rod;
Holding pole head described in above-mentioned any one, the holding pole head is arranged on the top of the body of rod.
Compared with prior art, a kind of holding pole head proposed by the present invention and holding pole device, at least have the following advantages that:
A kind of holding pole head and holding pole device that the embodiment of the present invention is proposed, due to opening up through on the column of holding pole head By hole, assembly pulley support frame is located at by hole lower section, and pulley assembly is arranged on assembly pulley support frame, by the cunning of pole side After the assembly pulley tail rope that wheel assembly is drawn is passed through by this side by hole, passed by hole from another, drawn by offside, tail rope Through column center, during lifting, the equalization of strain of tail rope falls a part of lifting and stresses power, and it is right during lifting by crane to reduce The eccentric force that pole is produced, it is to avoid the problems such as drawstring is damaged or broken, pole is inclined occurs during pole lifting, it is ensured that pole Overall stability and working security.
Further, the upper surface level of the pulley assembly installed in embodiment of the present invention offer pulley assembly installation portion is high Degree is higher than by the lower end in hole, less than the upper end by hole.By be so designed that can ensure assembly pulley tail rope can smoothly and It is unresisted to pass through two to pass through hole, it is ensured that the stabilization of holding pole device suspention is smoothed out.
Further, the embodiment of the present invention is by the setting of support roller assembly, make by offside through the assembly pulley tail rope for coming by Taken on support roller put and under, two groups of pulley assemblies is not produced and interfere with each other, can be constructed respectively, operate it is simpler can Lean on.
Further, the embodiment of the present invention realizes the connection of base and column body by the first thrust bearing, and first pushes away Power bearing upper end can be covered with the first thrust bearing and carry out end sealing, instead of the sliding friction knot of existing male connection Structure, spinning movement is sensitiveer, is lubricated without using substantial amounts of butter, and 360 degree of rotations are realized by thrust bearing, uses Easy to maintenance, structure is also more stablized.
To sum up, the embodiment of the present invention is provided holding pole head and holding pole device, the bias produced to pole during suspension operation Pressure is small, is not required to install angle pulley in use, is adapted to different orographic conditions, stability stronger with weight capacity Stronger, arrangement is simple, and difficulty of construction is smaller, and working security is high.
Brief description of the drawings
Fig. 1 is a kind of holding pole head structural representation provided in an embodiment of the present invention;
Fig. 2-1,2-2 are a kind of pillar construction schematic diagram of holding pole device provided in an embodiment of the present invention;
Fig. 3-1,3-2 are a kind of assembly pulley support frame structure schematic diagram of holding pole device provided in an embodiment of the present invention;
Fig. 4 is a kind of support roller assembly structure schematic diagram of holding pole head provided in an embodiment of the present invention;
Fig. 5-1,5-2 are a kind of understructure schematic diagram of holding pole head provided in an embodiment of the present invention;
Fig. 5-3 is a kind of datum axle structural representation of holding pole head provided in an embodiment of the present invention;
Fig. 5-4,5-5 are respectively the lower bearing nested structure schematic diagram coordinated with the upper and lower part of the datum axle of Fig. 5-3;
Fig. 6-1 is a kind of base cantilever design schematic diagram of holding pole head provided in an embodiment of the present invention;
Fig. 6-2 is a kind of rib for base structural representation of holding pole head provided in an embodiment of the present invention;
Fig. 7-1,7-2 are a kind of lower cantalever structural representation of holding pole head provided in an embodiment of the present invention;
Fig. 8-1 is a kind of upper cantilever structural representation of holding pole head provided in an embodiment of the present invention;
Fig. 8-2 is a kind of upper cantilever axle construction schematic diagram of holding pole head provided in an embodiment of the present invention;
Fig. 8-3 is a kind of upper cantilever bearing housing structure schematic diagram of holding pole head provided in an embodiment of the present invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.
As shown in figure 1, The embodiment provides a kind of holding pole head, holding pole head includes that column 1 and assembly pulley are supported Frame 3.Specifically, such as Fig. 2-1, shown in 2-2, column 1 is hollow structure, for installed in the body of rod upper end of holding pole device, outside it Wall offers two be oppositely arranged, and by hole 2, two lines by hole 2 pass through the center of column 1, and positioned at same level Face.Assembly pulley support frame 3 is two, is separately mounted on two outer walls of column 1 by the lower section of hole 2, assembly pulley support frame 3 End is provided with pulley assembly installation portion 4, for installing pulley assembly 19.
The present embodiment provide holding pole head be used for be arranged on holding pole device or pole the body of rod upper end, the present embodiment embrace Head by open up on column 1 communicate by hole 2, it is sliding when carrying out suspended work using the pulley assembly 19 of any side Wheel group tail rope is drawn by the upper end of the side roller group, sequentially pass through this side and offside by hole 2, drawn by offside.The present invention Embodiment can carry out tail rope positioning using the fixed pulley of the pulley assembly of offside, and tail rope passes through column center, during lifting, The lifting that the equalization of strain of tail rope falls a part stresses power, reduces the bias produced to pole or holding pole device during lifting Power, it is to avoid the problems such as drawstring is damaged or broken, pole is inclined occurs during pole lifting, it is ensured that pole or holding pole device entirety Stability and working security.
It is preferred that on the basis of above-described embodiment, the upper surface of the pulley assembly 19 installed in pulley assembly installation portion 4 Level height is higher than by the lower end in hole 2, less than the upper end by hole 2.The purpose of the design is, it is ensured that assembly pulley tail rope can With it is smooth and it is unresisted pass through two pass through hole, it is ensured that the stabilization of suspention is smoothed out.
It is preferred that another embodiment of the present invention provides a kind of holding pole head, as shown in figure 1, on the basis of above-described embodiment, The end of assembly pulley support frame 3 is also equipped with support roller assembly 5, for fixed block group tail rope.The level of the upper end of support roller assembly 5 is high Degree is higher than the upper surface of pulley assembly 19, less than the upper end by hole 2.As shown in figure 4, the outer rim of support roller 20 of support roller assembly 5 with The distance at the center of column 1 is more than the outer rim of pulley assembly 19 and the distance at the center of column 1.The present embodiment is set by support roller assembly Put, make by offside through come assembly pulley tail rope by taken on support roller put and under, two groups of pulley assemblies is not produced and interfere with each other, can To be constructed respectively, simpler reliability is operated.
Such as Fig. 3-1, shown in 3-2, it is preferred that another embodiment of the present invention provides a kind of holding pole head, with above-described embodiment phase Than, assembly pulley support frame 3 in the present embodiment includes two supporting plates 14 of vertical parallel arrangement, two supporting plates 14 between Connecting plate 15 is connected with, connecting plate 15 is vertical with two supporting plates respectively.The assembly pulley support frame of this structure is reducing as far as possible On the basis of materials and weight, the vertical resistance to tension intensity of supporting plate 14 installed is bigger, and the connecting plate 15 that middle part is set, enter one Step improves the intensity of whole assembly pulley support frame 3, with needed for meeting suspended work.
It is and above-mentioned it is preferred that another embodiment of the present invention provides a kind of holding pole head such as Fig. 1, and shown in 5-1 to Fig. 5-5 Embodiment is compared, and the holding pole head in the present embodiment also includes base 6, and base 6 is connected with the lower end of column 1 by the first thrust bearing Connect, the lower end of base 6 is used for installed in the body of rod upper end of holding pole device.First thrust bearing includes lower bearing set 7, thrust bearing Body 8 and datum axle 9.Wherein, lower bearing set 7 is arranged on the inwall of the bottom of column 1, the outer ring peace of thrust bearing body 8 7 inwalls are covered mounted in lower bearing, the top of datum axle 9 is arranged on the inner ring of thrust bearing body 8, and the lower end of datum axle 9 is arranged on On base 6.
The present embodiment realizes the connection of base and column body by the first thrust bearing, and the first thrust bearing upper end can use First thrust bearing capping 25 carries out end sealing, and instead of the sliding friction structure of existing male connection, spinning movement is more Plus it is sensitive, it is lubricated without using substantial amounts of butter, 360 degree of rotations are realized by thrust bearing, working service is convenient, structure Also more stablize.
Specifically, two parts that lower bearing set 7 can be shown in Fig. 5-4 and Fig. 5-5 are constituted, and correspond respectively to datum axle 9 Upper end and bottom, datum axle 9 is arranged in lower bearing set 7, can be respectively provided with thrust in two lower bearings set respectively Bearing body, the lower bearing set shown in Fig. 5-4 is referred to as top lower bearing set, and the lower bearing shown in Fig. 5-5 is covered under referred to as Portion's bearing holder (housing, cover), installs a cone bearing body 18 in the lower bearing set of top, the inner ring of cone bearing body 18 is arranged on the upper of datum axle 9 Ball bearing body 22, bearing washer 23 and thrust bearing body 8, ball axle are from top to bottom respectively mounted in end, bottom bearing holder (housing, cover) The inner ring for holding body 22 and thrust bearing body 8 is connected with the datum axle 9 positioned at the bottom of column 1, bearing washer 23 pair two Bearing body plays buffer action, to ensure the work well of ball bearing body 22 and thrust bearing body 8.In the embodiment The setting of multiple bearing bodies, makes that 360 degree of rotation can be carried out between column and base, during suspended work, can be according to need The direction of rotation of column is adjusted at any time.
As shown in Fig. 1, Fig. 6-1 and Fig. 6-2, it is preferred that another embodiment of the present invention provides a kind of holding pole head, with above-mentioned reality Apply example to compare, in the holding pole head in the present embodiment, be also equipped with base cantilever 10 between base 6 and column 1, base cantilever 10 to Be less three, it is circumferential and be uniformly arranged on datum axle 9, the structure of datum axle 9 as shown in Fig. 5-3, the end of base cantilever 10 End is provided with pulling eye 11.
It is preferred that being additionally provided with rib for base 21 on base cantilever 10 in the present embodiment, the structure of rib for base 21 is such as Shown in Fig. 6-2, rib for base 21 is installed on base cantilever 10, increases the intensity of base cantilever 10, is increased the service life, and is increased The weight capacity of pole.
As shown in Fig. 1, Fig. 7-1 and Fig. 7-2, it is preferred that another embodiment of the present invention provides a kind of holding pole head, with above-mentioned reality Apply example to compare, the holding pole head in the present embodiment also includes lower cantalever 12, lower cantalever 12 at least two, circumferential and uniform installation On the outer wall of column 1 below assembly pulley support frame 3, the end of lower cantalever 12 is provided with pulling eye 11.Lower cantalever 12 and its pull-up The setting in hole 11 may further ensure that the stability of holding pole head and pole.
As shown in Fig. 1 and Fig. 8-1, it is preferred that another embodiment of the present invention provides a kind of holding pole head, with above-described embodiment phase Than the holding pole head in the present embodiment also includes upper cantilever 13, and upper cantilever 13 is at least three, is arranged on circumferentially and uniformly column 1 upper end, the end of upper cantilever 13 is provided with pulling eye 11.The setting of upper cantilever and its pulling eye, by steel wire penetrating pulling eye team Pole is fixed, it is ensured that the stability of pole.Upper cantilever floor 24 can also be installed between upper cantilever 13, it is upper outstanding to increase The load ability of arm, and then increase the overall stability of pole.
It is preferred that as shown in Fig. 8-1 to Fig. 8-3, upper cantilever 13 includes upper cantilever body and the second thrust bearing, pulling eye 11 sets Put in the end of upper cantilever body.Second thrust bearing includes:Upper cantilever bearing holder (housing, cover) 16, thrust bearing body 8 and upper cantilever axle 17, The front end of upper cantilever body is arranged on the outer wall of upper cantilever bearing holder (housing, cover) 16;The outer ring of thrust bearing body 8 is arranged on upper cantilever bearing The inwall of set 16;The top of upper cantilever axle 17 is arranged on the inner ring of thrust bearing body 8, and the bottom of upper cantilever axle 17 is arranged on column 1 Upper end.Wherein, the structure of upper cantilever axle 17 and upper cantilever bearing holder (housing, cover) 16 is as shown in Fig. 8-2 and Fig. 8-3.Second thrust bearing upper end Can be using the second thrust bearing capping 27 by its end sealing, the capping of the second thrust bearing can be arranged on the lower edge by hole 2 Place, the second thrust bearing covers 27 parts and protrudes through hole 2 and be fixed, and can cover 27 lower ends and the in the second thrust bearing Dewatering orifice 26 is opened up on the column 1 of the upper end of cone bearing body 18 on two thrust bearings, by the second thrust bearing by upper cantilever Be attached with column, the drawstring on upper cantilever will not column rotation produce influence, be easy to suspention normal operation and angle Degree adjustment.
It is preferred that upper cantilever also includes:Cone bearing body 18, the outer ring of cone bearing body 18 is arranged on upper cantilever bearing holder (housing, cover) 16 inwall, and positioned at the top of thrust bearing body 8, inner ring and the upper end of upper cantilever axle 17 of cone bearing body 8 are mutually fixed. Upper cantilever and column are connected by thrust bearing, reduces the friction between column and upper cantilever, be effectively increased making for pole entirety Use the life-span.
In addition, another embodiment of the present invention also provides a kind of holding pole device, holding pole device includes the body of rod and any of the above-described reality Apply the holding pole head described in example.Wherein, holding pole head is arranged on the top of the body of rod.
The holding pole device that the embodiment of the present invention is provided, the eccentricity pressure produced to pole during suspension operation is small, in use It is not required to that angle pulley is installed, is adapted to different orographic conditions, stronger with weight capacity, stability is stronger, arrangement is simple, Difficulty of construction is smaller, and working security is high.
The above, specific embodiment only of the invention, but protection scope of the present invention is not limited thereto, and it is any Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all contain Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.

Claims (8)

1. a kind of holding pole head, it is characterised in that including:
Column, the column is hollow structure, and its outer wall offers be oppositely arranged two by hole, described two by hole Line passes through the center of the column, and positioned at same level;
Assembly pulley support frame, the assembly pulley support frame is two, is separately mounted on two column outer walls passed through below hole, The end of the assembly pulley support frame is provided with pulley assembly installation portion;
The holding pole head also includes base, and the base is connected with column lower end by the first thrust bearing;Wherein, described first Thrust bearing includes:
Lower bearing set, the lower bearing set is arranged on the inwall of the column bottom,
Thrust bearing body, the outer ring of the thrust bearing body is arranged on lower bearing and covers inwall,
Datum axle, the datum axle top is arranged on the inner ring of thrust bearing body, and the lower end of the datum axle is arranged on base On,
Wherein, the lower bearing set includes top lower bearing set and bottom bearing holder (housing, cover), is installed in the top lower bearing set One cone bearing body, the inner ring of the cone bearing body be arranged in the upper end of the datum axle, the bottom bearing holder (housing, cover) by Ball bearing body, bearing washer and the thrust bearing body, the ball bearing body and thrust bearing are up to respectively mounted down The inner ring of body is connected with the datum axle positioned at the column bottom;Base is also equipped between the base and column Cantilever, the base cantilever is at least three, circumferential and be uniformly arranged on the datum axle, the end of the base cantilever It is provided with pulling eye;
Rib for base is additionally provided with the base cantilever.
2. holding pole head according to claim 1, it is characterised in that the pulley assembly installed in the pulley assembly installation portion Upper surface level height higher than the lower end by hole, less than the upper end by hole.
3. holding pole head according to claim 2, it is characterised in that the end of the assembly pulley support frame is also equipped with support roller Assembly;
The level height of the support roller assembly upper end is higher than the upper surface of the pulley assembly, less than the upper end by hole;
The support roller outer rim of the support roller assembly and the distance at column center more than the pulley assembly outer rim and column center away from From.
4. holding pole head according to claim 1, it is characterised in that the holding pole head also includes lower cantalever, the lower cantalever At least two, it is circumferential and be uniformly arranged on the column outer wall below the assembly pulley support frame, the end of the lower cantalever End is provided with pulling eye.
5. holding pole head according to claim 1, it is characterised in that the holding pole head also includes upper cantilever, the upper cantilever At least three, upper end that is circumferential and being uniformly arranged on the column, the end of the upper cantilever is provided with pulling eye.
6. holding pole head according to claim 1, it is characterised in that the assembly pulley support frame includes vertical parallel arrangement Two supporting plates, are connected with connecting plate between two described supporting plates, the connecting plate is vertical with two supporting plates respectively.
7. holding pole head according to claim 5, it is characterised in that the upper cantilever includes:
Upper cantilever body, the pulling eye is arranged on the end of upper cantilever body;
Second thrust bearing, second thrust bearing includes:
Upper cantilever bearing holder (housing, cover), the front end of the upper cantilever body is arranged on the outer wall of the upper cantilever bearing holder (housing, cover);
Thrust bearing body, the outer ring of the thrust bearing body is arranged on the inwall of the upper cantilever bearing holder (housing, cover);
Upper cantilever axle, the upper cantilever axle top is arranged on the inner ring of the thrust bearing body, the upper cantilever axle bottom peace Mounted in column upper end.
8. a kind of holding pole device, it is characterised in that including:
The body of rod;
Holding pole head described in claim any one of 1-7, the holding pole head is arranged on the top of the body of rod.
CN201410653032.1A 2014-11-17 2014-11-17 Derrick head and derrick device Active CN104453340B (en)

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KR101364283B1 (en) * 2012-01-16 2014-02-18 주식회사백상 Tower Lifting Device and Method
CN202899734U (en) * 2012-10-17 2013-04-24 国家电网公司 Rotary holding pole cap
CN202925985U (en) * 2012-12-13 2013-05-08 黑龙江省送变电工程公司 A rotatable derrick head
CN203568723U (en) * 2013-07-01 2014-04-30 国家电网公司 Mast crane
CN103510742A (en) * 2013-10-15 2014-01-15 国家电网公司 Multifunctional rotary derrick
CN203867275U (en) * 2014-06-20 2014-10-08 宝鸡市银光电力机具有限责任公司 Internal suspension derrick rotatable craning cover
CN204238632U (en) * 2014-11-17 2015-04-01 国家电网公司 A kind of holding pole head and holding pole device

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