CN109750661A - A kind of clamping structure and mechanical splice for mechanical splice - Google Patents
A kind of clamping structure and mechanical splice for mechanical splice Download PDFInfo
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- CN109750661A CN109750661A CN201910020349.4A CN201910020349A CN109750661A CN 109750661 A CN109750661 A CN 109750661A CN 201910020349 A CN201910020349 A CN 201910020349A CN 109750661 A CN109750661 A CN 109750661A
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- key
- guide
- card access
- mechanical splice
- positioning sleeve
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Abstract
The invention discloses a kind of clamping structures for mechanical splice, including connection guide, assemble net rack socket part, key and holding force part, the accommodation space for being inserted into connection guide is equipped with inside assemble net rack socket part, assemble net rack socket part includes clamping portion ontology and the guide support portion that clamping portion ontology one end is arranged in, guide support has guide chute in portion, key is set in guide chute, it is equipped with guiding sliding surface on the inside of one end that clamping portion ontology is contacted with key and key can be in guide chute along guiding sliding surface sliding, connection guide and key contact position are guide rod card access surface, key is equipped with key sliding surface and key card access surface, holding force part is placed on the outside in guide support portion, the end in guide support portion is equipped with retention bead, holding force part is between key and retention bead, connection guide can be inserted into accommodation space and by holding force part Key is pushed between guiding sliding surface and guide rod card access surface and then realizes that connection guide is connect with assemble net rack socket part by rebound, and the mechanical splice with the clamping structure has many advantages, such as that grafting is convenient, and switching performance is reliable and withdrawal resistance is good.
Description
Technical field
The present invention relates to a kind of concrete component connection structures, and in particular to a kind of clamping structure for mechanical splice and
Mechanical splice.
Background technique
In construction, the docking of precast concrete main reinforcement is essential process, conventional concrete stake docking
Mode is the welding of steel plate, and steel part is exposed, causes the problem of corrosion resistance difference, and not can solve and seal between spliced pile head
The problem of, while the docking of existing building industry requirement precast concrete main reinforcement requires quickly, securely, and use welding manner
It can not achieve the requirement.
In the prior art, for the ease of can be realized the quick connection of precast concrete pile, usually in precast concrete pile
Both ends are equipped with mechanical splice, are as shown in figure 24 a kind of mechanical splice disclosed in the prior art prior art, including connection is led
Bar 1, positioning sleeve 2, intermediate nut 9, key 3 and spring 4, intermediate nut are mounted on the connection guide insertion end of positioning sleeve, in
Between side on nut far from connection guide insertion end be equipped with sliding surface, connection guide is equipped with card access surface, and key is by multiple
The ring structure of seperated latch composition, key and spring are placed in positioning sleeve, and it is fixed to pass through intermediate nut insertion in connection guide
When in the set of position, spring can push key to enter between sliding surface and card access surface, to realize the company of connection guide and positioning sleeve
It connects.
Existing mechanical splice has the following problems, as shown in Figure 24 and Figure 25 a, connection guide and positioning sleeve in order to prevent
There is the phenomenon of skew in grafting, and connection guide is equipped with the first circular conical surface 92, and intermediate nut is equipped with the second circular conical surface 90, connection
After guide rod and positioning sleeve grafting, the first circular conical surface and the second circular conical surface are matched to be corrected to grafting, avoid connection guide
There is crooked phenomenon with both positioning sleeves.However, as shown in Figure 24 and Figure 25 a, due to the first circular conical surface and the second circular conical surface
Length is longer so that connection guide can exist during insertion, between the first circular conical surface and the second circular conical surface it is biggish between
The central axis y-y of gap, the central axis x-x that will lead to connection guide and positioning sleeve is not coaxial, leads connection when applying external force
Bar is to during positioning sleeve grafting, latch elder generation and Plug contact close to connection guide axis side, and far from plug connector axis
With Plug contact after the latch of side, in Figure 24, the latch of downside is first compressed with Plug contact and under the action of plug
Spring, after the latch of upside with Plug contact, therefore, as shown in Figure 25 a, during connection guide insertion, the card of downside
Tooth has under the promotion of connection guide there are two movement, and one is moving far from central axis direction in the radial direction along positioning sleeve
(downward side direction movement in figure), another edge accommodates guide sleeve axial direction compressed spring (side direction moves to the right in figure),
And the latch of upside will not be contacted in the incipient stage of grafting with connection guide, cause the latch deflection of two sides, so that bullet
Spring two sides unbalance stress and there is heeling condition, when plug is further inserted into, it may appear that following two situation.The first feelings
Condition, as shown in Figure 25 a, due to smaller with the inner wall spacing of positioning sleeve on the downside of plug, the promotion of the latch of downside in plug
It further compressed spring and can cannot be introduced between connection guide and intermediate nut always down, and insert by plug ends limitation
Head upside is larger with the inner wall spacing of positioning sleeve, therefore the latch of upside is introduced into connection guide and centre under the promotion of spring
Between nut, when removing external force, latch and connection guide are sprung back under the action of the spring, since the latch of upside has entered company
Between guide rod and intermediate nut, and the latch of downside does not enter between connection guide and intermediate nut, therefore will cause connection
Not firm or even connection failure.Second situation, as shown in figure 24, since connection guide and the axis for accommodating limit sleeve exist partially
Difference, in connection guide insertion, key elder generation and Plug contact and compressed spring under the action of plug, the wedge of upside of downside
With Plug contact after piece, in the stage that is initially inserted into, the key of lower end squeezes spring, causes the spring inclination (shape of spring in Figure 25 a
State), the key that inclined spring will push upside is introduced between connection guide and intermediate nut and is inserted into biggish depth, such as
Shown in Figure 25 b, during connection guide continues into, spring will push remaining key and enter connection guide and intermediate nut
Between, still, the position of the clamping position of the key and connection guide that enter afterwards and key and the connection guide clamping being introduced into
At different location in plug, the depth that the depth that the wedge card insertion of upside enters is larger, and the wedge card insertion of downside enters is smaller, at this point,
The key stress of downside, and the key of upside does not stress, therefore, the extraction-resistant behavior that will cause the mechanical splice reduces.
Summary of the invention
The it is proposed of the present invention in view of the above problems, and a kind of mechanical splice of researching and designing, the technological means that the present invention uses
It is as follows:
A kind of clamping structure for mechanical splice, including connection guide, assemble net rack socket part, key and holding force part, institute
The accommodation space being equipped with inside assemble net rack socket part for being inserted into connection guide is stated, the assemble net rack socket part includes clamping portion sheet
Body and the guide support portion that clamping portion ontology one end is arranged in have more than one guide chute in the guide support portion,
The key is placed in guide chute, and guiding sliding surface is equipped on the inside of one end that the clamping portion ontology is contacted with key, described
Key can be in guide chute along guiding sliding surface sliding, and the connection guide and key contact position are guide rod card access surface, described
Key is equipped with the key card access surface with the key sliding surface of guiding sliding face contact and with guide rod clamping face contact, the holding force
Part is placed on the outside in guide support portion, and the end in the guide support portion is equipped with the retention bead for preventing holding force part from falling off, described
Holding force part is located axially between key and retention bead, and the connection guide can be inserted into accommodation space and pass through holding force
Key is pushed between guiding sliding surface and guide rod card access surface and then realizes that connection guide is connect with assemble net rack socket part by part rebound.
Further, the key card access surface is conical surface or elliptic conic shape face, in the plugged state, the guide rod card
Junction and key card access surface are face contact, solid wire contact or single-contact, and the guiding sliding surface is two with key sliding surface
The contact of root line or face contact.
Further, it is provided at least one face in the guide rod card access surface, key card access surface and guiding sliding surface
Anti-skid structure.
Further, the anti-skid structure is latch or taper thread.
Further, the holding force part is spring, also has on the holding force part close to one end of key and bends towards holding force part
The inner fovea part of center line, when the holding force part is placed on the outside in guide support portion the inner fovea part be placed in guide chute and with
Key is abutted far from one end of guiding sliding surface.
Further, the connection guide includes pedestal, plug and the interconnecting piece for connecting pedestal and plug, the bottom
It is equipped with the guide rod bearing surface of taper between seat and interconnecting piece, is set on the internal diameter of the connection guide insertion end of the assemble net rack socket part
There are insertion confined planes, when the connection guide plugging in fitting formula clamping portion, the guide rod bearing surface is abutted with insertion confined planes.
Further, the plug includes guide rod card access surface, arc-shaped transitional surface and plug guide surface, the guide rod clamping
Face and plug guide surface are tapered surface, and the guide rod card access surface is connected with the bigger diameter end of plug guide surface by arc-shaped transitional surface,
The inside of the connection guide insertion side of the key is equipped with key guide surface.
Further, the quantity of the guide chute is 3-6, and the section of the guide chute is sector, the guiding
The corresponding central angle of the sector crosssection of sliding slot is 30-90 degree.
Further, the clamping structure including mechanical splice disclosed by the invention further includes that the first positioning sleeve and second are fixed
Position set, described positioning sleeve one end are equipped with main reinforcement fixation hole, and the other end is equipped with mounting hole, and the connection guide is fixed on the first positioning
In the mounting hole of set, the assemble net rack socket part is fixed in the mounting hole of the second positioning sleeve.
Further, the clamping structure including mechanical splice disclosed by the invention, further includes the second positioning sleeve, and described second
Positioning sleeve one end is equipped with mounting hole, and the assemble net rack socket part is fixed in the mounting hole of the second positioning sleeve, second positioning
The outer diameter of set is equipped with external screw thread.
Compared with the prior art, the clamping structure of mechanical splice of the present invention has the advantages that the 1, machine
The clamping structure of tool connector includes connection guide, assemble net rack socket part, key and holding force part, and assemble net rack socket part one end, which has, leads
To support portion, guide support portion is provided with guide chute, so that connection guide can be convenient accurate plugging in fitting formula clamping portion
In, realize the quick connection of precast concrete pile；2, key card access surface is conical surface or elliptic conic shape face, in inserting state
Under, the guide rod card access surface and key card access surface are face contact, solid wire contacts or single-contact, the guiding sliding surface and wedge
Piece sliding surface is that both threads contact or face contact avoids so that the inside and outside stress of key not can be concentrated on a point because of stress
Deformation caused by excessively concentrating and damage, improve the extraction-resistant behavior of entire mechanical splice；3, it is set on the inside of connection guide insertion side
There is key guide surface, it is convenient to be oriented in connection guide insertion；4, it is provided with anti-skid structure on connection guide and key,
It can make connection guide and assemble net rack socket part is stronger is connected together；5, the end of holding force part is provided with inner fovea part,
The contact area that holding force part and key can be increased avoids in holding force part and key mechanism, and the inclination of key can squeeze into
In holding force part, so that holding force part, which leads to the problem of to be radially expanded, in turn results in grafting failure；6, connection guide is supported equipped with guide rod
Junction.Assemble net rack socket part is equipped with insertion confined planes, so that assemble net rack socket part can be to even in connection guide insertion process
Guide rod carries out downlink limit, and avoid connection guide crosses the extraction-resistant behavior for being inserted into and influencing concrete-pile.
Detailed description of the invention
Fig. 1 is the structure chart of mechanical splice clamping structure disclosed by the invention；
Fig. 2 is cross-sectional view at the A-A of Fig. 1；
Fig. 3 a is the main view of assemble net rack socket part；
Fig. 3 b is the cross-sectional view of assemble net rack socket part；
Fig. 3 c is the right view of Fig. 3 a；
Fig. 4 is the structure chart of connection guide；
Fig. 5 a is the structure chart of key；
Fig. 5 b is sectional view at B-B in Fig. 5 a；
Fig. 6 a is the end view of holding force part；
Fig. 6 b is the main view of holding force part；
Fig. 7 a is that holding force part is mounted on the structure chart in assemble net rack socket part；
Fig. 7 b is cross-sectional view at C-C in Fig. 7 a；
Fig. 8 is the first structure chart of mechanical splice disclosed by the invention；
Fig. 9 is the structure chart of positioning sleeve；
Figure 10 is schematic diagram when connection guide just starts to contact with key；
When Figure 11 is that the taper of the key card access surface of wedge card is identical as the guide rod card access surface taper of connection guide, wedge card and company
The clamping schematic diagram of guide rod；
Figure 12 a is key card access surface when being tapered surface or elliptic conic shape face connection guide, key and accommodate guide sleeve
Force analysis figure；
Figure 12 b is the enlarged drawing in Figure 12 a in dotted portion frame；
Figure 13 a is the schematic diagram that taper thread is machined in key card access surface；
Figure 13 b is the enlarged drawing in Figure 13 a at F；
Figure 14 a is the schematic diagram that taper thread is machined in guide rod card access surface；
Figure 14 b is the enlarged drawing in Figure 14 a at G；
Figure 15 a is when all having taper thread in key card access surface and guide rod card access surface, and key enters slide-and-guide face and leads
Schematic diagram when bar card access surface, at this point, the tooth top of the taper thread of key card access surface and guide rod card access surface mutually abuts；
Figure 15 b is the schematic diagram in Figure 15 a after key and connection guide are clamped, at this point, key and guiding sliding surface it
Between generate gap；
Figure 15 c is the schematic diagram of key and connection guide clamping only when having taper thread in guide rod card access surface；
Figure 16 a is the structure chart for being oriented to sliding surface and being equipped with latch；
Figure 16 b is the enlarged drawing that sliding surface and key sliding surface contact position are oriented in Figure 16 a；
Figure 17 a is the schematic diagram on key sliding surface with latch；
Figure 17 b is the enlarged drawing of key sliding surface and guiding sliding surface contact position in Figure 17 a；
Figure 18 is second of structure of mechanical splice disclosed by the invention；
Figure 19 a is the structure chart of assemble net rack socket part in second of structure；
Figure 19 b is the left view of Figure 19 a；
Figure 20 a is the structure chart of positioning sleeve in second of structure；
Figure 20 b is the right view of Figure 20 a；
Figure 21 is the third structure chart of mechanical splice disclosed by the invention；
Figure 22 is enlarged drawing at H in Figure 21；
Figure 23 is tip plate configurations figure；
Figure 24 is the structure chart of the mechanical splice of the prior art；
Figure 25 a is the connection guide of the mechanical splice of the prior art and the central axis of intermediate nut there are when deviation, is connected
Guide rod causes part key to cannot be introduced into the schematic diagram between intermediate nut and connection guide；
Figure 25 b be the mechanical splice of the prior art connection guide and intermediate nut central axis there are when deviation, wedge
After piece enters connection guide and intermediate nut, the schematic diagrames different from the clamping position of connection guide of multiple keies；
Figure 26 is when being equipped with the precast concrete pile end of the mechanical splice of the prior art to tilt, and concrete-pile is inserted
The schematic diagram connect；
Figure 27 be the prior art mechanical splice occurred during grafting insertion schematic diagram, that is, in Figure 26 on
Schematic diagram when the mechanical splice grafting of side；
Figure 28 is the schematic diagram in Figure 27 after mechanical splice clamping.
In figure: 1, connection guide, 10, guide rod card access surface, 11, taper thread, 12, pedestal, 13, plug, 14, interconnecting piece,
15, guide rod bearing surface, 16, plug guide surface, 17, arc-shaped transitional surface, 2, assemble net rack socket part, 20, accommodation space, 21, clamping
Portion's ontology, 22, guide support portion, 23, guide chute, 24, guiding sliding surface, 25, retention bead, 26, insertion confined planes, 3,
Key, 30, key sliding surface, 31, key card access surface, 32, key guide surface, 33, the face that is contacted with holding force part of key, 34, wedge
The lateral surface of piece, 4, holding force part, 40, inner fovea part, the 50, first positioning sleeve, the 51, second positioning sleeve, 52, main reinforcement, 53, main reinforcement fixes
Hole, 54, mounting hole, 55, outward flange, 56, intermediate incline, 57, interior chuck, 60, first end plate, the 61, second end plate, 63, connection
Guide fixing hole, 64, positioning sleeve fixation hole, 65, reinforcing rib fixation hole, 9, intermediate nut, the 90, second circular conical surface, 92, first
Circular conical surface.
Specific embodiment
It is as depicted in figs. 1 and 2 the first structure of the clamping structure of mechanical splice disclosed by the invention, including connection is led
Bar 1, assemble net rack socket part 2, key 3 and holding force part 4.In the present embodiment, as shown in figure 4, the connection guide 1 includes pedestal
12 and plug 13, pedestal 12 be externally provided with external screw thread.As shown in Fig. 3 a, Fig. 3 b and Fig. 3 c, it is equipped with inside the assemble net rack socket part 2
For being inserted into the accommodation space 20 of connection guide, the assemble net rack socket part 2 includes clamping portion ontology 21 and is arranged in clamping portion
The guide support portion 22 of 21 one end of ontology, with the guide chute of more than one (including one) in the guide support portion 22
23, in the present embodiment, guide chute has 3, and one end inner wall of guide chute 23 and clamping portion body contacts is equipped with taper
Guiding sliding surface 24, guiding sliding surface and assemble net rack socket part central axis angle a less than 90 °, it is preferable that guiding
The angle a of sliding surface and the central axis of assemble net rack socket part is 30 ° to 60 °.As depicted in figs. 1 and 2, the key 3 is arranged
In in guide chute 23, the key 3 can be slided in guide chute 23 along guiding sliding surface 24, the connection guide 1 and wedge
3 contact position of piece is guide rod card access surface 10, and as shown in figure 5 a and 5b, the key 3 is equipped with and is oriented to what sliding surface 24 contacted
Key sliding surface 30 and the key card access surface 31 contacted with guide rod card access surface 10, it is preferable that the axial direction of the guide rod card access surface 10
Length is greater than the axial length of key card access surface 31, and the holding force part 4 is placed on the outside in guide support portion 22, the guide support
The end in portion 22 is equipped with the retention bead 25 for preventing holding force part from falling off, and the holding force part 4 is presented axially in key 3 and limit convex
It rises between 25, the connection guide 1 can be inserted into accommodation space 20 and key 3 is pushed into guiding sliding surface by the rebound of holding force part 4
Between 24 and guide rod card access surface 10 and then realize that connection guide is connect with assemble net rack socket part.
It is illustrated in figure 8 the first structure of mechanical splice disclosed by the invention, which includes that the present invention discloses
Clamping structure, further include the first positioning sleeve 50 and the second positioning sleeve 51, in the present embodiment, the first positioning sleeve 50 and second is fixed
Position 51 structures having the same of set, as shown in figure 9, positioning sleeve one end has main reinforcement fixation hole 53, the other end is mounting hole 54, main
Muscle fixation hole can be the pier nose chuck structure for connecting with PC rod iron, be also possible to the threaded hole being connect with screw-thread steel or
It is the bellmouth for being connect with steel strand wires, specific structure is described later in detail in patent [2016100024791].First is fixed
It is connect in the main reinforcement fixation hole of position set and the second positioning sleeve with the main reinforcement in precast concrete pile, and the first positioning sleeve and second
Positioning sleeve is poured respectively in being equipped with internal screw thread in the both ends of concrete-pile, the mounting hole of positioning sleeve, is set on the pedestal of connection guide
There is external screw thread, connection guide is mounted in the mounting hole of the first positioning sleeve, it also is provided with external screw thread on the outer wall of assemble net rack socket part,
Assemble net rack socket part is mounted in the second positioning sleeve, and different precast concrete piles can be realized quick by the mechanical splice
Connection.
Due to needing first to install main reinforcement in the main reinforcement mounting hole of positioning sleeve, existing mechanical splice is fixed as of fig. 24
After being packed into main reinforcement in the set of position, being put into positioning sleeve successively by holding force part, key and intermediate nut again is then needed, due to
The length of main reinforcement is longer, and after main reinforcement is mounted in positioning sleeve, positioning sleeve can be only in horizontality, be not easy to by holding force part,
Key and intermediate nut are fitted into positioning sleeve, especially the installation of key, since key has multiple and forms seperated ring
Shape structure needs special installation tool and peace skill of changing a job that could complete, when increasing installation in key and positioning sleeve installation
Between and installation cost.In mechanical splice disclosed by the invention, as shown in fig. 1, assemble net rack socket part, key and holding force part can be with
It is assembled in advance in processing workshop, as shown, key can be limited in annular groove by holding force part, the key sliding surface of key
It is abutted with guiding sliding surface, so that assemble net rack socket part, key and holding force part become a global facility, then, then this is whole
Body component is assembled with the positioning sleeve for being mounted with main reinforcement, and this construction reduce installation steps, while being eliminated existing machinery and being connect
Head needs the demand of special tool(s) and mounting process when installing to key.Mechanical splice and existing machinery disclosed by the invention
Connector is compared, and due to being machined with guide chute in guide support portion, key is placed in guide chute, and holding force part is covered in guiding branch
The outside of support part, so that the gap Z2 between the minimum diameter of accommodation space and the maximum outside diameter of plug (under normal circumstances, is accommodated
Gap between the minimum diameter in space and the maximum outside diameter of plug is 0.1mm to 0.3mm) much smaller than positioning sleeve in the prior art
Internal diameter and plug outer diameter gap Z3, can be excessive and make to avoid the axis runout of connection guide and assemble net rack socket part
Occur part key in the prior art to be introduced between guiding sliding surface and guide rod card access surface, and part key is due to the resistance of plug
Gear is acted on and be cannot be introduced between guiding sliding surface and guide rod card access surface, so that there is the problem of grafting failure, ensure that grafting
Reliability.
As shown in Fig. 3 a and Fig. 8, in the mechanical splice, the front end of the outer wall of assemble net rack socket part is also machined with escape
201, limiting stand 202 is formed between escape and the front end face of assemble net rack socket part, is not had external screw thread on limiting stand, is worked as assembly
When formula clamping portion is screwed into positioning sleeve, the end face of limiting stand can limit the length that assemble net rack socket part is screwed into positioning sleeve, be convenient for
Quickly accurately assembled.Further, two planes positioned opposite can also be machined on limiting stand, in order to use spanner
Equal tools carry out clamping and are installed.
Further, as shown in Fig. 6 a, Fig. 6 b, Fig. 7 a and Fig. 7 b, the holding force part 4 is spring, is leaned on the holding force part 4
One end of nearly key 3 also has the inner fovea part 40 for bending towards holding force part center line, the quantity and the quantity phase of guide chute of inner fovea part
Together.When the holding force part 4 is placed on the outside in guide support portion 22, the inner fovea part 40 is placed in guide chute 23 and and key
One end far from guiding sliding surface abuts, and is provided with inner fovea part on holding force part, increases the contact area of holding force part and key, keep away
Exempt from key to occur tilting and causing phenomena such as stuck in the motion process in guide chute.
It can be the end of truncated cone-shaped, billiard table shape in the end of the plug 13 of connection guide disclosed by the invention, it is preferable that
As shown in figure 4, plug includes guide rod card access surface 10, plug guide surface 16 and arc-shaped transitional surface 17, the guide rod card access surface 10
It is taper face with plug guide surface 16, the bigger diameter end of two taper faces is connected by arc-shaped arc-shaped transitional surface, such as Fig. 5 b
Shown, key further includes the key guide surface 32 on connection guide insertion side internal diameter, the outside of key sliding surface 30, key
Face 34, the key face 33, key card access surface 31 and the key guide surface 32 that contact with holding force part be sequentially connected and surround cross section and be
Pentagonal configuration.
As shown in Figure 10, when the plug of this kind of structure is in plugging in fitting formula clamping portion, plug guide surface can elder generation and wedge
The key guide face contacts of piece, plug guide surface play the role of guiding to key guide surface in order to which key can be in holding force part
Under the action of smoothly enter between guiding sliding surface and guide rod card access surface, it is preferable that plug guide surface and key guide surface
Contact position is the midline position in two faces, can be slided to avoid the wedge angle edge of key or plug to mutual contact surface
It cuts, causes the abrasion of working face.
Since the guide rod card access surface of connection guide is tapered surface, when the key card access surface of key is and guide rod card access surface taper
When identical tapered surface, since the clamping position of key and connection guide is uncertain, it is clamped in key and connection guide
When, key card access surface and guide rod card access surface will not be fully mated.As shown in figure 11, in figure Q1 to Q5 curve indicate guide rod card access surface
Section radius curve at different location, J curve indicates the section radius curve at a certain position of key in figure, such as institute in figure
Show, when J curve is in the position Q1, J curve is bonded completely with Q1, when J curve is in Q2 to Q5, between J curve and Q curve
Gap gradually increases, that is to say, that and when key is in the different location of connection guide, key is different from the clamped condition of connection guide,
I.e. it cannot be guaranteed that key card access surface is bonded completely with guide rod card access surface.
Preferably, the key card access surface 31 of mechanical splice disclosed by the invention is conical surface or elliptic conic shape face, is being inserted
It connects under state, the key card access surface 31 and guide rod card access surface 10 are face contact, solid wire contacts or single-contact, the key
Sliding surface 30 is contacted with guiding sliding surface 22 for both threads or face contact.
That is, as depicted in figs. 12 a and 12b, when key card access surface is cone, in the plugged state, key
The diameter of card access surface is greater than the diameter of guide rod card access surface corresponding position, and the diameter of the key sliding surface is greater than guiding sliding surface pair
The diameter of position is answered, line contact is formed, at this time if the taper of key card access surface is slightly more or less than the taper of guide rod card access surface,
The two is then point contact；When key card access surface is elliptic conic shape face, also to need about the symmetrical ellipse arc conical surface of short axle
The key card access surface and guide rod card access surface for meeting the ellipse arc conical surface are that line contact or point contact specifically can be set to
The diameter of guide rod card access surface is equal to the minor axis length of key card access surface, naturally it is also possible to be set as other values, connect as long as meeting line
The requirement of touching, if the taper at this moment meeting key card access surface is slightly more or less than the taper of guide rod card access surface, if the two
For point contact, for guiding sliding surface and key sliding surface, it may be possible to the both ends of key sliding surface and guiding sliding face contact,
It could also be possible that both ends slightly inside is some, determined according to the specification of elliptic arc.Due in actual production process, being difficult to control wedge
Piece and guiding sliding surface and key sliding surface be face contact, in this way since, be set as line contact, in the circumferential, key it is interior
Side is intermediate stress (power F1 in figure), and the outside of key is both ends stress (the power F2 in figure), forms triangularity force structure,
So that the inside and outside stress of key not can be concentrated on a point, avoids deforming and damaging caused by excessively concentrating because of stress, improve
The extraction-resistant behavior of entire mechanical splice.
Further, it is provided at least one face in the guide rod card access surface, key card access surface and guiding sliding surface
Anti-skid structure, anti-skid structure can be taper thread 11 or latch.
It is respectively in the key card access surface 31 and guide rod card access surface 10 as shown in Figure 13 a, Figure 13 b, Figure 14 a and Figure 14 b
On be provided with taper thread, processing taper thread, which can be convenient, to be processed and reduces cost.Precast concrete pile is connected by mechanical splice
After connecing, connection guide will receive outside pulling capacity, and under the promotion of guiding sliding surface, key can generate key with connection guide
Opposite to slide, processing anti-skid structure is in key card access surface and guide rod card access surface to improve the resistance of the friction between key and connection guide
Power, and then improve the withdrawal resistance of precast concrete pile.
Further, taper thread 11 or latch are only processed in guide rod card access surface.As shown in fig. 15 a, when key card access surface
When with all having taper thread (latch) in guide rod card access surface, after key enters guiding sliding surface and guide rod card access surface, key card
The tooth top of junction and the taper thread in guide rod card access surface first contacts with each other, as illustrated in fig. 15b, when connection guide is by outside drawing
When pull out force, the taper thread in key card access surface and guide rod card access surface is mutually clamped, at this point, the key sliding surface and assembled of key
The high gap Z1 of a tooth can be generated between the guiding sliding surface of clamping portion, therefore, connection guide is will cause and assembled is clamped
Portion be not connected firmly by and and be axially moved gap.As shown in fig. 15 c, it is equipped in the guide rod card access surface of connection guide for
Therefore taper thread enters between guiding sliding surface and guide rod card access surface, key sliding surface is supported with guiding sliding surface when in key
It connects, key card access surface is abutted with the tooth top of the taper thread in guide rod card access surface, will not be generated the gap in Figure 15 b, be ensure that card
The secured performance connect.
Figure 16 a and Figure 16 b show the anti-skid structure that reciprocal latch structure is machined on slide-and-guide face, it is preferred that along dress
To on the direction of assemble net rack socket part outer diameter, the tooth height of latch is gradually increased accommodation space with formula clamping portion, that is, as schemed
The tooth height of latch shown in 16b is gradually increased beyond the height of dotted line in figure.The card gradually increased is processed on guiding sliding surface
Tooth, as shown in fig 16 a and fig 16b, after key enters between guiding sliding surface and plug, the lateral surface of key and adjacent card
Tooth contact, and then can prevent key from sliding between guiding sliding surface and plug, it ensure that the clamping of mechanical splice is secured.
Figure 17 a and Figure 17 b show the anti-skid structure that reciprocal latch structure is machined on the key sliding surface of key, such as scheme
Shown in 17b, after key enters between guiding sliding surface and connection guide, the front end of key can partially exceed guiding sliding surface,
When being machined with latch on key sliding surface, the inner wall of the connection guide direction of insertion of guiding sliding surface and assemble net rack socket part
The side of formation is connected on a flank of tooth of latch, and then limits the relative motion of key Yu assemble net rack socket part, is improved
The bonding strength of connection guide and assemble net rack socket part, and then extraction-resistant behavior is improved, in such an embodiment, it is preferable guiding
The angle r1 of sliding surface and assemble net rack socket part central axis is greater than the key sliding surface and assemble net rack socket part central axis of key
The angle r2 of line, in this way, the side that the inner wall of the connection guide direction of insertion of guiding sliding surface and assemble net rack socket part is formed can be with
It easily snaps onto the latch on key sliding surface.
The foregoing describe in key card access surface and guide rod card access surface, guide rod card access surface, guiding sliding surface and key sliding
Latch is processed on face or taper thread is used to limit key in four kinds of anti-Slipped Clove Hitch for accommodating the movement between guide sleeve and connection guide
Structure, but above-mentioned four kinds of forms are not limited to, anti-skid structure can be in key card access surface, guide rod card access surface, guiding sliding surface and wedge
It processes on one or more faces in piece sliding surface, no longer other form processings is described herein.
Meanwhile it as shown in figure 9, wrapping up in the outer wall of power positioning sleeve in order to increase embracing for the positioning sleeve and concrete-pile and preferentially selects
Polygonized structure, positioning sleeve outer wall is dodecagon structure, further, mounting hole one end of positioning sleeve in the present embodiment
Outer wall is equipped with outward flange 54, and the intermediate incline 56 of taper is equipped between outward flange and the outer wall of positioning sleeve ontology, positioning sleeve
Outer diameter is equipped with outward flange and intermediate incline, can increase positioning sleeve and coagulation in the case where not increasing positioning sleeve overall volume
The contact area of native stake end face improves the compressive property of concrete-pile end face, reduces positioning sleeve for concrete-pile end face pressure break
Possibility.
When mechanical splice is connected for concrete-pile, need that circumferentially multiple machinery connect in the end of concrete-pile
Head, when precast concrete pours, the case where inclination there are concrete end face and concrete-pile axis, due to connection guide be
Concrete-pile is mounted on concrete-pile end face after pouring, therefore can guarantee the plug of connection guide by measuring
End is in same plane, and positioning sleeve is to be cast in concrete-pile, and after concrete-pile pours, the position of positioning sleeve is limited
It is fixed.Therefore, as shown in figure 26, when the end face of concrete-pile tilts, in the figure, install the stake end face of connection guide with
Stake axis is vertical (expression passes through precise measurement, it is ensured that the end face of plug is consistent at a distance from stake end face), is equipped with centre
The stake end slope of nut, when two stakes are attached by form shown in Figure 26, the mechanical splice of upside in Figure 26
In connection guide insertion positioning sleeve in when will appear the state of insertion, i.e., as shown in Figure 27, when connection guide insertion is fixed
After in the set of position, the distance between guiding sliding surface of guide rod card access surface and intermediate nut on connection guide is excessive, so that key
Key sliding surface and key card access surface can not simultaneously with guiding sliding surface and guide rod be clamped face contact so that guide rod card access surface and
Occur gap (Z5 in figure) between key card access surface, that is, connection guide and positioning sleeve can not be clamped by key at this time, such as be schemed
Shown in 28, after in connection guide insertion positioning sleeve, need to carry out drawing outward to connection guide, in order to which key leads connection
Bar and intermediate nut are clamped, and when drawing that connection guide is outside, the concrete-pile end face of two docking can generate correspondingly sized
Gap Z4 (distance of the outside drawing of connection guide), cause concrete-pile connect it is not firm.
As shown in Fig. 3 b, Fig. 4 and Fig. 8, the connection guide 1 further includes the guiding for connecting the pedestal 12 and plug 13
Portion 14, is equipped with the guide rod bearing surface 15 of taper between the guide part and pedestal, the connection guide of the assemble net rack socket part is inserted
The internal diameter for entering end is equipped with the insertion confined planes 26 of taper, and when connection guide plugging in fitting formula clamping portion, the guide rod is abutted
Face is abutted with insertion confined planes.That is, insertion confined planes lead connection when in connection guide plugging in fitting formula clamping portion
Bar plays the role of downlink limit, can prevent connection guide from crossing and be inserted into positioning sleeve and generate above-mentioned connection guide and cross insertion
And an end face is caused the problem of gap occur.
Further, the quantity of the guide chute is 3-6, and the section of the guide chute is sector, the guiding
The corresponding central angle of the sector crosssection of sliding slot is 30-90 degree.
As Figure 18 be mechanical splice disclosed by the invention second of structure, including the first positioning sleeve 50, connection guide 1,
Assemble net rack socket part 2, key 3, holding force part 4 and the second positioning sleeve 51.The mechanical splice of the structure and the first mechanical splice
The difference lies in that the mechanical splice disclosed in the first structure, is screwed into positioning sleeve to limit assemble net rack socket part
Length is machined with escape and limiting stand on the outer wall of clamping portion ontology, in this configuration, as shown in figure 19a, clamping portion sheet
It is not provided with escape and limiting stand on the outer wall of body, as shown in Figure 20 a and Figure 20 b, close to main reinforcement fixation hole in positioning sleeve
One end is equipped with interior chuck 57, and when assemble net rack socket part is screwed into positioning sleeve, assemble net rack socket part has one end of retention bead
End face is abutted with the end face of interior chuck, and then is limited assemble net rack socket part and be screwed into the length in positioning sleeve.
For the ease of the installation of assemble net rack socket part, as shown in fig. 19b, the connection guide of assemble net rack socket part is inserted into one end
There are two card holes 29 for processing, in order to be clamped and installed to it.
As Figure 21, Figure 22 and Figure 23 show the third structure of mechanical splice disclosed by the invention, the structure and first
Kind or second mechanical splice the difference lies in that the outer wall of the positioning sleeve of the mechanical splice of the structure is cylindrical surface, positioning sleeve
Outer wall on be machined with external screw thread.As shown in the figure, precast concrete pile both ends are respectively fixed with first end plate 60 and second end
Plate 61 has connection guide fixation hole 63, positioning sleeve fixation hole 64 and reinforcing rib fixation hole 65 as shown in figure 23 on end plate,
Positioning sleeve fixation hole 64 to form calabash shaped to being connected to reinforcing rib fixation hole 65, pacifies in the connection guide fixation hole in first end plate
Load guide rod, installs positioning sleeve in the positioning sleeve fixation hole on the second end plate, and the reinforcing rib of first end plate and the second end plate is solid
Determine the main reinforcement connection in Kong Junyu concrete-pile, which may be implemented the fast of the precast concrete pile with tip plate configurations
Speed connection.
Embodiment described above only describe the preferred embodiments of the invention, not to model of the invention
It encloses and is defined, without departing from the spirit of the design of the present invention, those of ordinary skill in the art are to technical side of the invention
The various changes and improvements that case is made should all be fallen into the protection scope that claims of the present invention determines.
Claims (10)
1. a kind of clamping structure for mechanical splice, it is characterised in that: including connection guide (1), assemble net rack socket part (2),
Key (3) and holding force part (4), the internal accommodation space (20) being equipped with for being inserted into connection guide of the assemble net rack socket part (2),
The assemble net rack socket part (2) includes the guide support portion of clamping portion ontology (21) and setting in clamping portion ontology (21) one end
(22), there are more than one guide chute (23) on the guide support portion (22), the key (3) is placed in guide chute
(23) in, guiding sliding surface (24), the key are equipped on the inside of one end that the clamping portion ontology (21) contacts with key (3)
(3) it can be slided in guide chute (23) along guiding sliding surface (24), the connection guide (1) is to lead with key (3) contact position
Bar card access surface (10), the key (3) be equipped with guiding sliding surface (24) the key sliding surface (30) that contacts and with guide rod card
The key card access surface (31) of junction (10) contact, the holding force part (4) are placed on the outside of guide support portion (22), the guiding branch
The end of support part (22) is equipped with the retention bead (25) for preventing holding force part from falling off, and the holding force part (4) is located axially at
Between key (3) and retention bead (25), the connection guide can be inserted into accommodation space and be sprung back by holding force part and push away key
Enter to be oriented between sliding surface and guide rod card access surface and then realizes that connection guide is connect with assemble net rack socket part.
2. the clamping structure according to claim 1 for mechanical splice, it is characterised in that: the key card access surface is circle
Tapered surface or elliptic conic shape face, in the plugged state, the guide rod card access surface and key card access surface are that face contact, solid wire contact
Or single-contact, the guiding sliding surface is contacted with key sliding surface for both threads or face contact.
3. the clamping structure according to claim 1 or 2 for mechanical splice, it is characterised in that: the guide rod card access surface,
Anti-skid structure is provided at least one face in key card access surface and guiding sliding surface.
4. the clamping structure according to claim 3 for mechanical splice, it is characterised in that: the anti-skid structure is latch
Or taper thread.
5. the clamping structure according to claim 1 for mechanical splice, it is characterised in that: the holding force part is spring,
One end on the holding force part close to key also has the inner fovea part (40) for bending towards holding force part center line, when the holding force part is placed on
The inner fovea part is placed in guide chute and abuts with key far from one end of guiding sliding surface when the outside in guide support portion.
6. the clamping structure according to claim 4 for mechanical splice, it is characterised in that: connection guide (1) packet
Include pedestal (12), plug (13) and the interconnecting piece (14) for connecting pedestal and plug, the pedestal (12) and interconnecting piece (14)
Between be equipped with the guide rod bearing surface (15) of taper, the internal diameter of the connection guide insertion end of the assemble net rack socket part (2) is equipped with
It is inserted into confined planes (26), when the connection guide plugging in fitting formula clamping portion, the guide rod bearing surface (15) and insertion are limited
Face (26) abuts.
7. the clamping structure according to claim 6 for mechanical splice, it is characterised in that: the plug further includes circular arc
Transition face (17) and plug guide surface (16), the guide rod card access surface (10) and plug guide surface (16) are tapered surface, described to lead
The bigger diameter end of bar card access surface (10) and plug guide surface (16) is connected by arc-shaped transitional surface (17), the connection of the key (3)
The inside of guide rod insertion side is equipped with key guide surface (32).
8. the clamping structure according to claim 1 for mechanical splice, it is characterised in that: the quantity of the guide chute
It is 3-6, the section of the guide chute is sector, and the corresponding central angle of the sector crosssection of the guide chute is 30-90 degree.
9. a kind of mechanical splice, it is characterised in that: the clamping including mechanical splice described in any one of claim 1 to 8
Structure further includes the first positioning sleeve and the second positioning sleeve, and described positioning sleeve one end is equipped with main reinforcement fixation hole, and the other end is equipped with installation
Hole, the connection guide are fixed in the mounting hole of the first positioning sleeve, and the assemble net rack socket part is fixed on the second positioning sleeve
In mounting hole.
10. a kind of mechanical splice, it is characterised in that: the clamping including mechanical splice described in any one of claim 1 to 8
Structure further includes the second positioning sleeve, and second positioning sleeve one end is equipped with mounting hole, and the assemble net rack socket part is fixed on second
In the mounting hole of positioning sleeve, the outer diameter of second positioning sleeve is equipped with external screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910020349.4A CN109750661A (en) | 2019-01-09 | 2019-01-09 | A kind of clamping structure and mechanical splice for mechanical splice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910020349.4A CN109750661A (en) | 2019-01-09 | 2019-01-09 | A kind of clamping structure and mechanical splice for mechanical splice |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109750661A true CN109750661A (en) | 2019-05-14 |
Family
ID=66405200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910020349.4A Withdrawn CN109750661A (en) | 2019-01-09 | 2019-01-09 | A kind of clamping structure and mechanical splice for mechanical splice |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109750661A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114250765A (en) * | 2020-09-25 | 2022-03-29 | 怀化市港翔管桩有限公司 | Tubular pile structure for construction convenient to equipment |
-
2019
- 2019-01-09 CN CN201910020349.4A patent/CN109750661A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114250765A (en) * | 2020-09-25 | 2022-03-29 | 怀化市港翔管桩有限公司 | Tubular pile structure for construction convenient to equipment |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20200721 Address after: No.1 Xiangnan East Road, Nansha Industrial Park, Jingang town, Zhangjiagang City, Suzhou City, Jiangsu Province Applicant after: Tianhai steel bar (Zhangjiagang) Co.,Ltd. Address before: 434000 Jingzhou city of Hubei province Shashi Town Village two groups Cen Chen No. 370 Applicant before: Yuan Xuefeng |
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Application publication date: 20190514 |
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