CN217144338U - Die assembly bolt, assembly and disassembly tools and tubular pile mould - Google Patents

Abstract

The utility model provides a compound die bolt, assembly and disassembly tools and tubular pile mould, which comprises a base, middle nut, nut seat, lower nut and bolt, be equipped with the recess and the through-hole of intercommunication on the base, the recess is used for installing middle nut on the base and restricts middle nut and rotate, the opening of nut seat is used for installing lower nut on the nut seat and restricts lower nut and rotate, the bolt passes the through-hole and is connected with middle nut and/or lower nut screw-thread fit, be equipped with the claw portion that cooperates with the bolt head of compound die bolt on the sleeve of assembly and disassembly tools, be equipped with a plurality of compound die bolts on the tubular pile mould, compound die bolt part is few, the structure is retrencied, easy processing, comprehensive use cost is low; the disassembly and assembly are convenient, the service life is long, and online replacement can be realized; parts are fully exposed, so that maintenance is facilitated; the bolt head is matched with the disassembling tool for optimization, the tolerance is higher, the success rate and the efficiency of automatically disassembling and assembling the die bolt and the tubular pile die can be greatly improved, the tubular pile die is convenient to open and assemble, few in fault points and high in safety factor.

Description

Die assembly bolt, assembly and disassembly tools and tubular pile mould

Technical Field

The utility model belongs to the technical field of the tubular pile mould compound die, concretely relates to compound die bolt, assembly and disassembly tools and tubular pile mould.

Background

The prestressed pipe pile is mainly used for low bearing platform pile foundations of industrial and civil buildings, is widely used for engineering foundations of railways, highways, bridges, municipal administration, large-scale equipment and the like, and has the characteristics of high strength, strong bearing capacity and strong adaptability to geological structures. The general method for manufacturing the reinforced concrete prestressed pipe pile comprises the following steps: the steel bar cage is arranged in the two half upper dies and the two half lower dies of the tubular pile die, the two half tubular pile dies are screwed by using the die closing bolts, the tubular pile die can form a closed cavity, concrete is poured into the tubular pile die, after centrifugation and steam curing solidification, the die closing bolts of the tubular pile die are loosened, and the tubular pile die is opened to take out a formed concrete product.

The pipe pile die for the concrete pile is generally a long circular column or a square cross-section column, hundreds of groups of bolt pairs are arranged along two sides of the pipe pile die, and the bolt pairs are screwed by an air cannon spanner to realize locking of an upper pipe pile die and a lower pipe pile die; when the pipe pile die is opened, the air cannon spanner is used for loosening the bolt pair, so that the upper pipe pile die and the lower pipe pile die are separated.

The common die assembly bolt is a common swing bolt pair or a spring bolt pair at present, and has the following problems: (1) when the eyelet bolt pair is tightened, the bolt can be locked by using an air cannon spanner only by manually turning the bolt to the upper cover die, so that the labor intensity of personnel is high; (2) the spring bolt is arranged on the upper cover die, the screw rod is pressed into the nut of the lower die by the air cannon wrench during die assembly to realize screwing, but the spring and the accessory parts thereof are driven by the screw rod to rotate left and right in the compression process, so that the spring is easy to deform and damage, the safety coefficient is reduced, the structure is extremely difficult to disassemble and assemble, the pipe pile die cannot be replaced on line, the pipe pile die needs to be lifted to the position below the line to be replaced by a special worker, and the time and labor are wasted; (3) the parts are installed in a closed manner, the damaged parts are difficult to find in time, and the maintenance is inconvenient; (4) the sizes of the two ends of the bolt head are consistent, and the bolt head needs to be strictly aligned with a bolt pair for tightness by using a disassembling tool such as a pneumatic hammer wrench and the like, so that the bolt pair is inconvenient to disengage, and the disassembling success rate and the disassembling efficiency are influenced; (5) when the design can be applied to other structures of the die closing bolt of the tubular pile die, the structure of the tubular pile die needs to be additionally improved, and the comprehensive use cost is higher.

SUMMERY OF THE UTILITY MODEL

The invention aims to solve one of the technical problems to a certain extent at least, and the utility model provides a compound die bolt, a disassembling tool and a tubular pile die.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a compound die bolt, includes base, middle nut, nut seat, lower nut and bolt, be equipped with the recess and the through-hole of intercommunication on the base, the recess is used for installing middle nut on the base and limits the middle nut and rotate, be equipped with the opening on the nut seat, the opening is used for installing lower nut on the nut seat and limits the lower nut and rotate.

In the above mold clamping bolt, preferably, the groove is in limit fit with the top or the bottom of the middle nut, the groove and the middle nut include at least one first fitting surface for limiting the rotation of the middle nut, and the middle nut is placed in the groove.

Above-mentioned compound die bolt, preferably, the lower nut includes first boss, opening and the spacing cooperation in first boss bottom, opening and lower nut include at least one restriction lower nut pivoted second fitting surface, be equipped with the pinhole on the nut seat, be equipped with the split pin in the pinhole.

In the above mold clamping bolt, a flat washer is preferably provided between the bolt and the base.

The above mold closing bolt preferably comprises a first thread section, a second thread section, and a polished rod section located between the first thread section and the second thread section, wherein the polished rod section is longer than the screw hole height of the middle nut, the diameter of the polished rod section is smaller than the small diameters of the first thread section and the second thread section, and the first thread section is in threaded fit with the middle nut, and the second thread section is in threaded fit with the lower nut when the bolt is fastened.

In the above mold clamping bolt, preferably, the bolt includes a bolt main body and a bolt head, and a size of a head end of the bolt head is smaller than a size of an end of the bolt head connected to the bolt main body.

Preferably, the bolt main body is connected with the bolt head bolt main body in an integrated or split mode, at least two clamping jaws are arranged on the bolt head, and a clamping groove is formed between every two adjacent clamping jaws.

Preferably, the top of the clamping groove is provided with a slope, and the bolt body extends to the end part above the bolt head or the top of the bolt head is in a conical head structure.

A disassembling tool comprises a sleeve, wherein a claw part matched with the bolt head of the mold closing bolt is arranged on the sleeve.

Preferably, the claw portion is fitted with a bolt head wall surface or a card slot.

Above-mentioned assembly and disassembly tools, preferably, the sleeve is connected with the wind big gun.

The utility model provides a tubular pile mould, includes mould and lower mould, go up and be equipped with a plurality of as above arbitrary one between mould and the lower mould the compound die bolt, the base links to each other with last mould, the nut seat links to each other with the lower mould, all be equipped with the passageway that is used for the bolt to remove on last mould and the lower mould.

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

(1) the die assembly bolt has few parts, simple structure, easy processing and low comprehensive use cost;

(2) the die assembly bolt is convenient to disassemble and assemble, has no spring or hinge structure, has long service life and can realize online replacement;

(3) all parts are fully exposed, so that damaged parts can be found conveniently at the first time, and oiling and maintenance are facilitated;

(4) compared with the conventional bolt head with the two ends of the same size, the bolt head structure has higher tolerance and is convenient to disengage;

(5) the bolt head and the matched optimal design of the disassembling tool sleeve are convenient for the claw part on the sleeve to correspond to the clamping groove, the claw part stretches into the clamping groove to drive the bolt to rotate, the compatibility of the posture of the bolt is greatly improved, and the success rate and the efficiency of automatically disassembling and assembling the die closing bolt and the tubular pile die can be greatly improved.

(6) The pipe pile die is uniformly clamped by matching the bolt with the middle nut and the lower nut which limit rotation under the flat washer, so that the die assembly of the pipe pile die can be realized, the bolt is opened when the bolt rotates reversely until the polished rod section reaches the middle nut and does not return continuously, the die assembly of the pipe pile die can be realized, the die opening and closing are convenient, the number of fault points is small, the safety coefficient is high, the die assembly bolt can be replaced at the position where the existing pipe pile die is provided with the eyelet bolt pair or the spring bolt, the pipe pile die does not need to be additionally improved, and the application cost is low.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a perspective structural view of embodiment 1 of the present invention;

FIG. 2 is an exploded view of embodiment 1 of the present invention;

fig. 3 is a perspective structural view of embodiment 2 of the present invention;

fig. 4 is an exploded view of embodiment 2 of the present invention;

fig. 5 is a top view structural diagram of a bolt head according to embodiment 2 of the present invention;

fig. 6 is a top perspective view of embodiment 3 of the present invention;

fig. 7 is an exploded view of embodiment 3 of the present invention;

fig. 8 is a bottom perspective view of embodiment 3 of the present invention;

fig. 9 is a top perspective view of the bolt head of embodiment 4 and embodiment 2 of the present invention;

fig. 10 is a bottom perspective view of the bolt head of embodiment 4 and embodiment 3 of the present invention;

fig. 11 is a perspective view of embodiment 5 of the present invention;

fig. 12 is a perspective view of embodiment 6 of the present invention;

fig. 13 is a bolt clamping state diagram according to embodiment 6 of the present invention;

fig. 14 is a bolt open state diagram according to embodiment 6 of the present invention;

fig. 15 is a bolt replacement state diagram according to embodiment 6 of the present invention.

In the figure: the bolt comprises a base 1, a groove 101, a through hole 102, a first matching surface 121, a middle nut 2, a nut seat 3, an opening 301, a pin hole 302, an opening pin 303, a second matching surface 341, a lower nut 4, a first boss 401, a bolt 5, a second boss 501, a flat washer 502, a first threaded section 503, a second threaded section 504, a polished rod section 505, a bolt body 506, a polygonal prism 5061, a bolt head 507, a clamping groove 5071, a slope 5072, a polygonal groove 5073, a polygonal hole 5074, a clamping jaw 5075, a sleeve 6, a claw 601, a groove 6011, a prism hole 602, a wind cannon 7, an output shaft 701, an upper die 801, an upper die rabbet plate 8011, a lower die 802, a lower die rabbet plate 8021, a channel 901 and a notch 9011.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "axial", "radial", "vertical", "horizontal", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "plurality" or "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Example 1:

fig. 1 and 2 show a preferred embodiment of the mold closing bolt of the present invention, the mold closing bolt includes a base 1, a middle nut 2, a nut seat 3, a lower nut 4 and a bolt 5, the base 1 is provided with a communicating groove 101 and a through hole 102, the groove 101 is used for installing the middle nut 2 and limiting the middle nut 2 on the base 1 to rotate, the nut seat 3 is provided with an opening 301, the opening 301 is used for installing the lower nut 4 and limiting the lower nut 4 on the nut seat 3 to rotate, and the bolt 5 passes through the through hole 102 and is connected with the middle nut 2 and/or the lower nut 4 in a threaded fit manner.

In the above mold clamping bolt, preferably, the groove 101 is in limit fit with the top or bottom of the middle nut 2, the groove 101 and the middle nut 2 comprise at least one first mating surface 121 for limiting the rotation of the middle nut 2, and the middle nut 2 is placed in the groove 101.

Preferably, the groove 101 is a square groove, the middle nut 2 is a square nut which is in limited sliding fit with the direction hole, so that the middle nut 2 can be slidably embedded into the base 1 from the outside of the groove 101, a first matching surface 121 which limits the rotation of the middle nut 2 is formed by the wall surface of the square nut and the wall surface of the square hole, the middle nut 2 has a tendency of moving upwards when the bolt 5 is screwed into the lower nut 4, and the axial gap of the groove 101 provides a moving space for the upward movement of the middle nut shaft 5.

Preferably, the base 1 is a square steel block for compact installation and cost reduction.

Preferably, the cross-sectional width of the groove 101 is greater than that of the through hole 102, so that the groove 101 can be in limit fit with the top or the bottom of the middle nut 2 to prevent the middle nut 2 from deviating.

In the above mold clamping bolt, preferably, the lower nut 4 includes a first boss 401, the opening 301 is in limit fit with the bottom of the first boss 401, the opening 301 and the lower nut 4 include at least one second fitting surface 341 for limiting the rotation of the lower nut 4, the opening 301 is in sliding fit with the lower nut 4, the nut seat 3 is provided with a pin hole 302, and the pin hole 302 is internally provided with a split pin 303.

Preferably, the cross section of the opening 301 is a T-shaped structure, the first boss 401 is a square structure, the screw head of the lower nut 4 is made into a T-shaped structure, the opening 301 of the T-shaped structure and the bottom of the first boss 401 are in limit fit to support the lower nut 4, so that the lower nut 4 can be slidably inserted into the nut seat 3 from the outside of the opening 301, the T-shaped opening 301 and the wall surface of the lower nut 4 form a second matching surface 341 for limiting the rotation of the lower nut 4, the lower nut 4 is prevented from deviating by inserting the split pin 303 into the pin hole 302, and the lower nut 4 is convenient to replace.

In the above mold clamping bolt, preferably, the bolt 5 includes a second boss 501, and the second boss 501 may be limited with the base 1.

Preferably, the bolt 5 is sleeved with a flat washer 502 positioned between the second boss 501 and the base 1, the flat washer 502 is pressed on the top of the base 1 through the second boss 501, the anti-loosening effect is achieved, and the pressure of the head of the bolt 5 on the base 1 is dispersed through the flat washer 502 and the top of the base 1, so that uneven wear is reduced.

In the above mold clamping bolt, preferably, the bolt 5 includes a first thread section 503, a second thread section 504, and a polished rod section 505 located between the first thread section 503 and the second thread section 504, the length of the polished rod section 505 is greater than the height of the screw hole of the intermediate nut 2, the diameter of the polished rod section 505 is smaller than the small diameter of the first thread section 503 and the second thread section 504, the first thread section 503 is in threaded fit with the intermediate nut 2 when the bolt 5 is fastened, and the second thread section 504 is in threaded fit with the lower nut 4.

Preferably, the first thread segments 503 are longer than the second thread segments 504, and during the clamping and locking process, the intermediate nut 2 and the first thread segments 503 are always involved in the rotation until the lower nut 4 bites into the second thread and is completely screwed in. When loosened, the second thread segments 504 continue to be drawn up by the first thread ends 503 after the lower nut 4 has been loosened. In the clamping bolt, preferably, the bolt 5 comprises a bolt main body 506 and a bolt head 507, and one end of the bolt head 507 is smaller than the other end of the bolt head 507 connected with the bolt main body 506; preferably, bolt 5 is the integral type hexagon bolt head 507 including bolt main part 506 and bolt main part 506, general structure, reduce cost, when realizing the dismouting of bolt 5 through the wind big gun spanner of supporting hexagon bolt head 507, avoided the bolt head that conventional both ends size is unanimous to need strict alignment, be not convenient for the wind big gun head to break away from, also do not benefit to the wind big gun head and align before screwing up the bolt and insert, can improve tolerance nature, the success rate of automatic dismouting compound die bolt equipment by a wide margin.

Those skilled in the art will appreciate that the recess 101 of the base 1 and the middle nut 2, the opening 301 of the nut holder 3 and the lower nut 4 may be provided in other mutually matching shapes, such as circular, hexagonal, etc., according to the needs of the actual application.

Example 2:

fig. 3 to 5 show another preferred embodiment of the clamp bolt according to the present invention, which differs from embodiment 1 in that: bolt 5 includes bolt main part 506, is the bolt head 507 of split type connection with bolt main part 506, be equipped with two jack catchs 5075 on the bolt head 507 at least, form draw-in groove 5071 between the adjacent jack catchs 5075, the top of draw-in groove 5071 is equipped with domatic 5072, the bolt head 507 top is the conical head structure.

Preferably, the bolt body 506 comprises a polygonal prism 5061, a polygonal groove 5073 which is in limit fit with the polygonal prism 5061 is arranged on the bolt head 507, the bolt head 507 is sleeved on the top of the bolt body 506 through the polygonal groove 5073 and the polygonal prism 5061 in a matching way, and the limit fit and detachable connection between the bolt head 507 and the bolt body 506 is realized.

Preferably, the polygonal prism 5061 includes 3-8 sides, so that the bolt 5 can be stably assembled and disassembled.

Preferably, the slots 5071 include a plurality of slots spaced around the bolt head 507 for synchronous and stable force application with the tool.

Preferably, the bolt head 507 is in limit fit with the second boss 501, and the bolt head 507 is supported by the second boss 501.

Example 3:

fig. 6 to 8 show another preferred embodiment of the clamp bolt according to the present invention, which differs from embodiment 1 in that: bolt 5 includes bolt main part 506, is the bolt head 507 of split type connection with bolt main part 506, be equipped with two jack catchs 5075 on the bolt head 507 at least, form draw-in groove 5071 between the adjacent jack catchs 5075, the top of draw-in groove 5071 is equipped with domatic 5072, the tip that bolt main part 506 extends to the bolt head 507 top is the conical head structure.

Preferably, the bolt body 506 comprises a polygonal prism 5061 with a top in a conical head structure, a polygonal hole 5074 which is in limit fit with the polygonal prism 5061 is arranged on the bolt head 507, the bolt head 507 is sleeved on the top of the bolt body 506 in a matched manner with the polygonal prism 5061 through the polygonal hole 5074, and the conical head structure on the top of the polygonal prism 5061 protrudes above the bolt head 507, so that the bolt body 506 is detachably connected with the bolt head 507.

Preferably, the bolt head 507 is in limit fit with the second boss 501, the bolt head 507 is supported by the second boss 501, and the bolt head 507 is supported by the second boss 501.

Preferably, the bolt head 507 is in a polygonal star-shaped head structure, so that the claw part 601 on the sleeve 6 corresponds to the clamping groove 5071, and the claw part 601 extends into the clamping groove 5071 to drive the bolt 5 to rotate, so that the tolerance is higher.

Example 4:

as shown in fig. 9 and 10, a preferred embodiment of the assembling and disassembling tool of the present invention includes a sleeve 6, and the sleeve 6 is provided with a claw 601 engaged with a slot 5071 of a clamping bolt as in embodiment 2 or 3.

Preferably, a groove 6011 is provided on an end surface of the claw 601, and smoothness of the sleeve 6 biting into the bolt head 507 is increased by the groove 6011.

In embodiment 2 or embodiment 3, since the top of the groove 5071 is provided with the slope 5072, the end of the bolt body 506 extending to the upper side of the bolt head 507 or the top of the bolt head 507 is in a conical head structure, which facilitates that the sleeve 6 can smoothly bite into the bolt head 507 in embodiment 3 or embodiment 4, the claw 601 on the sleeve 6 corresponds to the groove 5071, the claw 601 extends into the groove 5071, and the claw 601 rotates to cooperate with the groove 5071 to push the bolt head 507 and facilitate the bolt 5 to be screwed in and out, so that even if the deviation between the axis of the bolt 5 and the axis of the sleeve 6 is large, the tolerance is higher, the bolt can still smoothly bite into and form stable torque transmission, thereby reducing the difficulty in research and development of the automatic die-assembling and disassembling bolt equipment, greatly increasing the compatibility of the posture of the bolt 5, and greatly improving the success rate of the automatic die-assembling and disassembling bolt equipment.

Because the bolt head 507 is detachably connected with the bolt main body 506, the bolt head 507 can be sleeved when the disassembly and assembly are needed, the number of spare parts of the bolt head 507 of a plurality of die assembly bolts in the tubular pile die is reduced, the cost is saved, the bolt head 507 and the bolt main body 506 can be matched and then connected into a whole, the bolt head 507 is prevented from moving and falling, and the assembly time is saved.

Preferably, the inner wall of the claw part 601 can be in limit fit with the outer wall of the hexagonal bolt head 507 in embodiment 1, so that the application range of the disassembling tool is expanded.

Example 5:

as shown in fig. 11, another preferred embodiment of the disassembling tool of the present invention includes a sleeve 6, the sleeve 6 is provided with a claw 601 engaged with a slot 5071 of the mold clamping bolt according to embodiment 2 or 3, and the sleeve 6 is connected to a wind cannon 7.

Preferably, the sleeve 6 is provided with a prismatic hole 602 which is connected with the output shaft 701 of the wind cannon 7 in a matching manner, so that the wind cannon 7 is driven by the electric drive output shaft 701 to rotate by the sleeve 6 which is installed in a limiting and matching manner through the prismatic hole 602, a wind cannon wrench is formed, and the labor intensity of disassembly and assembly is reduced compared with that of manual drive.

Example 6:

fig. 12 shows a preferred embodiment of the pipe pile die of the present invention, the pipe pile die includes an upper die 801 and a lower die 802, a plurality of die assembly bolts as in any one of embodiment 1, embodiment 2 and embodiment 3 are provided between the upper die 801 and the lower die 802, the base 1 is connected to the upper die 801, the nut seat 3 is connected to the lower die 802, and the upper die 801 and the lower die 802 are both provided with a channel 901 for the bolt 5 to move.

Preferably, the base 1 is connected to the upper mold tongue-and-groove plate 8011 of the upper mold 801 by welding, the nut seat 3 is connected to the lower mold tongue-and-groove plate 8021 of the lower mold 802 by welding, the opening 301 faces the outer side of the pipe pile mold, the middle nut 2 is installed in the base 1, and the lower nut 4 is installed in the nut seat 3, so that the lower nut 4 is in limit fit with the lower mold 802.

Preferably, the channels 901 are correspondingly formed in the recesses 9011 of the upper mold 801 and the lower mold 802, respectively, so that the bolts 5 are exposed when moving in the recesses 9011, and damage and oil coating maintenance can be found out at the first time.

The disassembling and assembling application principle of the pipe pile die is as follows:

when the tubular pile mould compound die, with plain washer 502 cover on bolt 5, by present or the utility model discloses the assembly and disassembly tools drives bolt 5 rotatory, bolt 5 tip can be twisted from top to bottom along base 1's through-hole 102, second screw thread section 504 and middle nut 2's screw interlock back, continue down until in screwing in lower nut 4's screw along passageway 901, first screw thread section 503 and middle nut 2's screw thread fit simultaneously, bolt 5 is spacing with base 1 top through first boss 401 and plain washer 502, be as shown in fig. 13 bolt 5 clamping state, bolt 5 presss from both sides tightly and forms prestressing force, install on the lower mould tongue-and-groove board 8021 of last mould tongue-and-groove board 8011 of mould 801 and lower mould 802 through the interval of a plurality of compound die bolts, go up mould 801 and lower mould 802 reliable connection and realize tubular pile mould compound die installation.

When the tubular pile mould die sinking, by current or the utility model discloses dismounting tool drives 5 counter-rotations of bolt, middle nut 2 and lower nut 4 simultaneously with bolt 5 upwards fall back, break away from until second screw thread section 504 and lower nut 4's screw, bolt 5 continues to turn back and falls back to first screw thread section 503 and middle nut 2's screw and break away from, polished rod section 505 is located middle nut 2's screw region this moment, even continue to turn back and also upwards fall back no longer, be as shown the bolt 5 open mode of figure 14, bolt 5 breaks away from the connection to lower mould 802, avoid bolt 5 to deviate from under through-hole 102 to bolt 5's spacing, when the bolt 5 that will correspond the compound die bolt all tears open the state, can realize tubular pile mould die sinking with last mould 801 and lower mould 802 separation, need not to pull down bolt 5 completely, for the compound die assembly labour saving and time again of tubular pile mould.

When the internal parts need to be replaced, the lower nut 4 can be replaced by pulling out the cotter 303 in the state of fig. 14, the bolt 5 can be lifted up in the state of fig. 14, and the bolt 5 continues to rotate reversely, so that the second thread section 504 is completely withdrawn after being matched with the screw hole of the middle nut 2, the bolt 5 is replaced in the state of fig. 15, the bolt 5 is taken out, and the flat washer 502, the middle nut 2 and the bolt 5 can be replaced.

The die closing bolt can be used for the disassembly and assembly structure of the tubular pile die but is not limited to be used for disassembling and assembling the tubular pile die.

To sum up, the utility model discloses prior art has following technological effect:

firstly, the die assembly bolts have few parts, simple structure, easy processing and low comprehensive use cost;

the die assembly bolt is convenient to disassemble and assemble, has no spring and hinge structure, has a service life obviously longer than that of a traditional spring bolt pair and a movable joint bolt pair, all parts can be disassembled and assembled outside the tubular pile die, any part can be replaced in a very short time after being damaged, workers can realize online replacement, and the tubular pile die does not need to be lifted away from a production line for offline replacement;

all parts are fully exposed, so that damaged parts can be found at the first time conveniently, and oiling and maintenance are facilitated;

one end of the bolt head 507 is smaller than the other end of the bolt head 507 connected with the bolt body 506, so that the tolerance of the bolt head is higher than that of a conventional bolt head with the same size of two ends, and the bolt 5 can be conveniently disengaged;

the bolt head 507 and the dismounting tool sleeve 6 are optimally designed in a matched mode, the claw part 601 on the sleeve 6 corresponds to the clamping groove 5071, the claw part 601 extends into the clamping groove 5071 to drive the bolt 5 to rotate, the sleeve 6 does not need to be strictly aligned with the bolt 5 to be loosened or loosened, the compatibility of the posture of the bolt 5 is greatly improved, and the success rate and the efficiency of automatically dismounting the die assembly bolt and the tubular pile die can be greatly improved.

When the die closing bolt is applied to a tubular pile die, the die closing of the tubular pile die can be realized when the bolt 5 is uniformly clamped under the flat washer 502 in cooperation with the middle nut 2 and the lower nut 4 which limit rotation, the die opening of the tubular pile die can be realized when the bolt 5 rotates reversely until the polished rod section 505 reaches the middle nut 2 and does not go back, the die opening and closing are convenient, the number of fault points is small, the safety coefficient is high, the die closing bolt can be replaced at the position where an eyelet bolt pair or a spring bolt is configured on the existing tubular pile die, the additional improvement on the tubular pile die is not needed, and the application cost is low.

The above detailed description is only for the purpose of illustrating the practical embodiments of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications that do not depart from the technical spirit of the present invention are intended to be included within the scope of the present invention.

Claims (11)

1. The utility model provides a compound die bolt, its characterized in that includes base (1), middle nut (2), nut seat (3), lower nut (4) and bolt (5), be equipped with recess (101) and through-hole (102) of intercommunication on base (1), recess (101) are used for installing middle nut (2) and restriction middle nut (2) and rotate on base (1), be equipped with opening (301) on nut seat (3), opening (301) are used for installing lower nut (4) and restriction lower nut (4) and rotate on nut seat (3), bolt (5) pass through-hole (102) and with middle nut (2) and/or lower nut (4) screw-thread fit connection.

2. A clamp bolt according to claim 1, characterised in that the recess (101) is in positive engagement with the top or bottom of the intermediate nut (2), the recess (101) and intermediate nut (2) including at least one first engagement surface (121) for limiting rotation of the intermediate nut (2), the intermediate nut (2) being received in the recess (101).

3. A clamp bolt according to claim 1, characterized in that the lower nut (4) comprises a first boss (401), the opening (301) is in limit fit with the bottom of the first boss (401), the opening (301) and the lower nut (4) comprise at least one second fitting surface (341) for limiting the rotation of the lower nut (4), the nut holder (3) is provided with a pin hole (302), and the pin hole (302) is internally provided with a split pin (303).

4. A clamp bolt according to claim 1, characterised in that a plain washer (502) is provided between the bolt (5) and the base (1).

5. A clamp bolt according to claim 1, wherein the bolt (5) comprises a first thread section (503), a second thread section (504), and a polished rod section (505) located between the first thread section (503) and the second thread section (504), the polished rod section (505) has a length greater than the height of the screw hole of the intermediate nut (2), the polished rod section (505) has a diameter smaller than the small diameters of the first thread section (503) and the second thread section (504), and the first thread section (503) is in threaded engagement with the intermediate nut (2) and the second thread section (504) is in threaded engagement with the lower nut (4) when the bolt (5) is tightened.

6. A clamp bolt according to claim 1, characterised in that the bolt (5) comprises a bolt body (506) and a bolt head (507), the head end of the bolt head (507) being of a smaller dimension than the end of the bolt head (507) to which the bolt body (506) is attached.

7. A matched mould bolt according to claim 6, characterized in that the bolt main body (506) is connected with the bolt head (507) in an integrated or split mode, at least two clamping jaws (5075) are arranged on the bolt head (507), and clamping grooves (5071) are formed between adjacent clamping jaws (5075).

8. A clamp bolt according to claim 7, characterised in that the top of the clamping groove (5071) is provided with a ramp (5072), and the end of the bolt body (506) extending above the bolt head (507) or the top of the bolt head (507) is of a conical head structure.

9. A tool for detaching and attaching a mold, characterized by comprising a sleeve (6), wherein a claw portion (601) to be engaged with a head portion of a bolt (5) of a mold clamping bolt according to any one of claims 1 to 8 is provided on the sleeve (6).

10. A dismantling tool according to claim 9, characterized in that said sleeve (6) is connected to a pneumatic hammer (7).

11. A pipe pile mould, comprising an upper mould (801) and a lower mould (802), characterized in that a plurality of mould closing bolts according to any claim 1-8 are arranged between the upper mould (801) and the lower mould (802), the base (1) is connected with the upper mould (801), the nut seat (3) is connected with the lower mould (802), and the upper mould (801) and the lower mould (802) are both provided with channels (901) for moving the bolts (5).

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