A modular quick-install concrete steel formwork

Abstract

The present invention provides a modular quick-install concrete steel mold, which belongs to the technical field of tubular formwork for construction engineering, and includes a mold body with a fan-shaped cavity inside, and a plurality of concentric partitions with fan-shaped cross sections are arranged in the fan-shaped cavity; all the partitions can move along the radial straight line of the fan-shaped cavity in the fan-shaped cavity, and when the two ends of the partitions are respectively in contact with the inner side walls of the corresponding fan-shaped cavity, the partitions are fixed in the fan-shaped cavity, so that the fan-shaped area between any two partitions constitutes a mold cavity of a certain specification. The modular quick-install concrete steel mold can simultaneously and quickly produce a variety of prefabricated tube sheets, and has strong versatility.

Description

Technical Field

[0001] The invention belongs to the technical field of tubular formwork for construction engineering, and more specifically is a tubular plate concrete mould. Background Art

[0002] Arc-shaped precast concrete tube sheets are often used in engineering. These sheet-shaped precast concrete tube sheets are used to combine into pipe-shaped structures and play their respective corresponding roles. For example, common precast concrete tube sheets for tunnels, subways and other projects, as well as precast tube sheets for some special large drainage pipes that cannot be cast or installed as a whole. At present, this type of precast tube sheet is generally cast and formed using a corresponding mold during production. The template of the corresponding mold consists of a bottom plate, four side plates, and two upper and lower cover plates. The template structure of this type of mold is relatively simple and easy to make and assemble. It is almost a universal design idea for the molding mold of concrete precast parts. Therefore, only one type of precast tube sheet can be formed at a time. When there is a demand for multiple precast tube sheets, it is necessary to design different templates and combine different molds for production. Although the specifications of some subway and tunnel prefabricated tube sheets are relatively uniform, the prefabricated tube sheets for concrete pipes for other purposes may have a variety of specifications and models. Moreover, even for prefabricated tube sheets for tunnels and subways, the same manufacturer often receives multiple orders at the same time, or customized production orders for different prefabricated tube sheets for different tunnel sections, and still faces production needs for prefabricated tube sheets of different models. For engineering construction, the rapid production and supply of manufacturers at the same time is also a strong guarantee for construction progress. Summary of the invention

[0003] In view of the technical status quo mentioned in the background technology, in order to overcome the corresponding defects in the prior art, the present invention particularly discloses a modular quick-assembly concrete steel mold, which can better solve the problems that the current prefabricated tube plate forming templates are not universal after being combined into a mold, the forming specifications are single, and the production efficiency is low.

[0004] In order to overcome the defects of the prior art, those skilled in the art provide the following technical solutions: a modular quick-assembly concrete steel mold, comprising a mold body having a fan-shaped cavity inside, wherein the fan-shaped cavity is provided with a plurality of concentric partition plates with fan-shaped cross sections; all the partition plates can move along the radial straight line of the fan-shaped cavity within the fan-shaped cavity, and when the two ends of the partition plates are respectively in contact with and fit with the inner walls of the corresponding fan-shaped cavity, the partition plates are fixed in the fan-shaped cavity so that the fan-shaped area between any two partition plates constitutes a mold cavity of a certain specification model.

[0005] Furthermore, a stud is fixed on the top surface of each partition plate, and the stud is threadedly connected to a threaded through hole on a slider, and when the stud is screwed into the threaded through hole to the bottom, the partition plate is exactly located at a position concentric with the fan-shaped cavity.

[0006] Furthermore, all the slide blocks are slidably installed in the strip-shaped slide holes opened on the top wall of the mold body along the same linear direction, and the linear direction is located in the radial direction of the fan-shaped cavity.

[0007] Furthermore, the top ends of all the sliders are each fixed with a threaded block via a vertical rod, and all the threaded blocks are threadedly connected to a lead screw, which is located parallelly above the strip-shaped sliding hole, and when the lead screw rotates to move all the partition plates to be fixed as a whole with the mold body, all the sliders are connected in series in close contact with each other to close the strip-shaped sliding hole.

[0008] Furthermore, it also includes a plugging screw, which is placed from below the threaded block and screwed into the threaded through hole, and the bottom end surface of the plugging screw is flush with the inner top surface of the fan-shaped cavity.

[0009] Furthermore, the threaded block includes an outer column sleeve and a threaded tube coaxially located in the outer column sleeve, the lead screw threadably passes through the threaded tube, and a non-hole flange is provided at each end of the threaded tube, one end of the non-hole flange is in contact with the elastic element on the end surface of the outer column sleeve, and the other end of the non-hole flange is axially pressed by a locking threaded cap threadedly sleeved on the end of the outer column sleeve, so that the threaded tube and the outer column sleeve are connected as a whole, and when the outer column sleeve is fixed in the strip sliding hole, the threaded tube rotates in the outer column sleeve together with the lead screw.

[0010] Furthermore, a plurality of fastening bolts are provided on the outside of the through hole of the locking threaded cover for the screw to freely pass axially, and the fastening bolts are screwed into the end of the outer column sleeve or firmly pressed against the end surface of the outer column sleeve.

[0011] Furthermore, the elastic element is a disc spring, whose large end is located in the annular groove on the end surface of the outer column sleeve, and a gasket is fixed on its small end. The gasket is tightly attached to one end of the hole-free flange under the elastic action of the disc spring.

[0012] Furthermore, there are several annular arrays of mold bodies, and each of the ends of the lead screws installed on all the mold bodies that are close to each other is fixed with a driven bevel gear, and all the driven bevel gears are meshed with a driving bevel gear at the bottom end of a vertically installed and rotatable rotating shaft. Each driven bevel gear is connected to the corresponding lead screw by at least one elastic telescopic pin. Under a set torque, the elastic telescopic pin can slide away from the slot on the lead screw for its insertion, so that when the lead screw cannot rotate, the rotation of the driving bevel gear will cause the driven bevel gear to rotate relative to the lead screw.

[0013] Furthermore, a protruding strip portion is provided on the outer circumferential surface of the top wall of the mold body, the strip-shaped sliding hole extends into the strip portion, and the length of the strip portion is required to enable all the sliders to move with their respective partition plates to the outside of the mold body;

[0014] The thread on the lead screw has a plurality of sections, the pitch of each section of the thread is different, and the longer the thread block on the partition plate is, the larger the pitch of the thread on the corresponding lead screw is.

[0015] Compared with the prior art, the beneficial effects of the present invention are: the present invention still adopts the traditional fan-shaped cavity in the overall structure, but the difference is that the fan-shaped cavity is divided into multiple mold cavities, which is flexible and adjustable, and can be quickly assembled and adjusted by only one screw.

[0016] More specifically, the size of the mold cavity can be flexibly adjusted through multiple partition plates, and the partition plates are used as the core template of the modular design element, combined with the mold body to quickly assemble into different mold cavities. Prefabricated tube sheets of various specifications can be cast on the same steel mold, which not only has high production efficiency and shortens delivery time, but also makes better use of the corresponding templates to combine into molds of different specifications, reduces the types and quantity of molds, brings great convenience to production management, and has the function of producing prefabricated tube sheets of various specifications in the same mold at one time.

[0017] In addition, there is no doubt that the concrete steel mold structure in the present invention can also be used in the processing of other concrete prefabricated parts with similar structures, and can be adaptively changed to be used as other concrete prefabricated molds, which is worthy of promotion.

[0018] Other functions and features of the present invention will be specifically introduced in the subsequent embodiments to provide a full understanding of the concept of the present invention and thus to be specifically applied to production practice. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A structural schematic diagram of the present invention;

[0020] Figure 2 A simplified view showing the partition plate in the radial direction of the mold body;

[0021] Figure 3 for Figure 2 A magnified view of the structure within the elliptical area;

[0022] Figure 4 for Figure 3 Schematic diagram of the threaded through hole on the middle slider being blocked by a screw plug;

[0023] Figure 5 A schematic diagram of an installation structure of a lead screw and a thread block;

[0024] Figure 6 It is a schematic diagram of the linkage structure of several mold bodies;

[0025] Figure 7 This is a specific structural diagram of the mold body in the present invention.

[0026] Among them, the mold body 1, the strip plate part 101, the pouring port 102, the partition plate 2, the stud 3, the slider 4, the vertical rod 5, the threaded through hole 6, the screw 7, the blocking plug 8, the threaded block 9, the outer column sleeve 901, the threaded tube 902, the elastic element 903, the locking thread cover 904, the fastening bolt 905, the non-hole flange 906, the driven bevel gear 10, the driving bevel gear 11, the rotating shaft 12, the elastic telescopic pin 13, and the slot 14. DETAILED DESCRIPTION

[0027] Based on the several drawings in the embodiments of the present invention and referring to the following text description, a relatively clear and complete introduction of the technical scheme in the embodiments of the present invention can be made. However, it should be understood that the embodiments mentioned in this article are only one or several specific methods of the present invention, and not all implementation structures or method steps.

[0028] like Figure 1 As one of the embodiments of the present invention, a modular quick-install concrete steel formwork is now described in detail, the main structure of which is as follows Figure 1 As shown, it includes a mold body 1 with a fan-shaped cavity inside. The fan-shaped cavity has the same shape as the strip-shaped concrete prefabricated pipe piece, and is used to form the corresponding pipe assembly prefabricated pipe plate. However, the fan-shaped cavity in this embodiment is much larger than the traditional one, and is provided with a number of concentric partition plates 2 with fan-shaped cross sections inside it, that is, arc-shaped steel bent plates. The steel bent plates serve as one of the core templates of the steel mold and are combined with other templates to form the mold cavity, which plays an important role. In this embodiment, specifically, all the partition plates 2 can move along the radial straight line of the fan-shaped cavity in the fan-shaped cavity. When the two ends of the partition plates 2 are in contact with the inner wall of the corresponding fan-shaped cavity, that is, Figure 1When in the position shown, the partition plate 2 will be close to the inner wall of the fan-shaped cavity, thereby being firmly fixed in the fan-shaped cavity. In this way, the fan-shaped area between any two partition plates 2 can form a mold cavity of a certain specification, forming a prefabricated tube sheet of a certain specification, and different concretes can be injected into different mold cavities.

[0029] Specifically, if Figure 2-3 As shown, a stud 3 is fixed on the top surface of each partition plate 2, and the stud 3 is threadedly connected to a threaded through hole 6 on a slider 4, and when the stud 3 is screwed into the threaded through hole 6, that is, when the partition plate 2 is in contact with the inner top surface of the fan-shaped cavity, the partition plate 2 is exactly located at a position concentric with the fan-shaped cavity, that is, at this time, the corresponding partition plate 2 is installed in place in the mold body 1, dividing the original fan-shaped cavity into a plurality of casting cavities for prefabricated tube sheets. In practice, all sliders 4 can be slidably installed in a strip-shaped sliding hole along the same straight line direction, and this slider 4 is arranged on the top wall of the mold body 1, and the aforementioned straight line direction can be located in the direction of a certain radius of the fan-shaped cavity, so that the corresponding partition plate 2 fixed thereto is guided to enter the corresponding position in the mold body 1 by sliding the slider 4 in the strip-shaped sliding hole.

[0030] For the synchronous drive installation of all partition plates 2, it is possible to Figure 3 As shown, the top ends of all the sliders 4 are fixed with threaded blocks 9 through the vertical rods 5. For example, two vertical rods 5 arranged opposite to each other are used to connect the sliders 4 and the threaded blocks 9. The threaded blocks 9 are rectangular blocks. All the threaded blocks 9 are threadedly connected to a lead screw 7. The lead screw 7 is located parallel to and just above the strip-shaped slide hole. When the lead screw 7 rotates, all the threaded blocks 9 move linearly under the guidance of the sliders 4, so that all the partition plates 2 move to be fixed as one with the mold body 1, that is, when the two ends of each partition plate 2 are attached to the inner side wall of the corresponding fan-shaped cavity and cannot move further, all the sliders 4 are also connected in series in close contact with each other to completely close the part of the strip-shaped slide hole located on the partition plate 2, and then form a closed forming mold cavity of several or more concrete prefabricated tube sheets.

[0031] In use, any partition plate 2 can be removed to form a thicker prefabricated tube sheet. After the partition plate 2 is removed, the corresponding threaded through hole 6 will be opened. Figure 4 , and also includes a sealing plug 8, which is inserted from below the threaded block 9 and screwed into the threaded through hole 6, and the bottom end surface of the sealing plug 8 is flush with the inner top surface of the fan-shaped cavity to close the corresponding threaded through hole 6.

[0032] In actual use, each time the mold is assembled, the sliders 4 may not be evenly spaced and installed on the lead screw 7, but are casually mounted on the lead screw 7 to improve assembly efficiency. Then, when the lead screw 7 is subsequently rotated, some partition plates 2 may move to the position first and remain fixed. At this time, the lead screw 7 is stuck and cannot rotate, and the remaining partition plates 2 cannot reach the set position. In order to solve this problem, Figure 5 As shown, the threaded block 9 in this embodiment includes an outer column sleeve 901, and a threaded tube 902 coaxially located in the outer column sleeve 901, the lead screw 7 passes through the threaded tube 902 in a threaded manner, and a non-hole flange 906 is provided at each end of the threaded tube 902, one end of the non-hole flange 906 is in contact with the elastic element 903 on the end surface of the outer column sleeve 901, and the other end is axially pressed by a locking threaded cap 904 threadedly sleeved on the end of the outer column sleeve 901, so that the threaded tube 902 and the outer column sleeve 901 are axially elastically extruded and connected. As a whole; this structural design makes it possible that when the outer column sleeve 901 is fixed in the strip sliding hole, that is, when the end of the corresponding partition plate 2 has been in contact with the side wall of the fan-shaped cavity, the screw 7 continues to rotate and cannot normally perform the function of its screw mechanism. Then, the threaded tube 902 will overcome the above-mentioned elastic extrusion force and rotate together with the screw 7 in the outer column sleeve 901. That is, at this time, the threaded tube 902 is similar to being integrated with the screw 7 and rotates in the axial hole in the outer column sleeve 901, thereby avoiding affecting the normal operation of the screw 7 and preventing the screw 7 from getting stuck.

[0033] In order to make the above connection structure more firm, reliable and adjustable, Figure 5 , a plurality of fastening bolts 905 can be provided on the outer side of the through hole of the locking thread cover 904 for the screw 7 to freely pass axially, and the fastening bolts 905 are screwed into the end of the outer column sleeve 901, or firmly pressed against the end face of the outer column sleeve 901. When firmly pressed against the end face of the outer column sleeve 901, the locking thread cover 904 actually generates an axial pulling force relative to the outer column sleeve 901, so that the locking thread cover 904 and the thread teeth on the outer column sleeve 901 are reliably contacted, the tooth gap is eliminated, and the stability is improved. During manufacturing, the elastic element 903 can be a disc spring, the large end of which is located in the annular groove on the end face of the outer column sleeve 901, and a gasket is fixed on the small end. The gasket is tightly attached to one end of the non-hole flange 906 under the elastic action of the disc spring, so as to realize a reliable axial elastic extrusion connection.

[0034] For the steel mold structure of the prefabricated tube sheet in the above embodiment, Figure 6, it can be optimized that there are several mold bodies 1 in a circular array, and each of the ends of the lead screws 7 installed on all the mold bodies 1 that are close to each other is fixed with a driven bevel gear 10, and all the driven bevel gears 10 are meshed with a driving bevel gear 11 at the bottom end of a vertically installed and rotatable rotating shaft 12, and each driven bevel gear 10 and the corresponding lead screw 7 need to be connected by at least one elastic retractable pin 13, for example, as shown in the specific example Figure 7 As shown. Under the set torque, the elastic retractable pin 13 of the present design can slide away from the slot 14 on the lead screw 7 for inserting it, so that when the lead screw 7 cannot rotate, that is, when all the partition plates 2 in the corresponding mold body 1 are installed in place, the rotation of the active bevel gear 11 will cause the driven bevel gear 10 to rotate relative to the lead screw 7, and the two will be out of the transmission relationship, so as not to affect the adjustment of the partition plates 2 in the remaining mold bodies 1. This is also mainly aimed at the situation where the position between each slider 4 and the lead screw 7 is installed at random at the installation location. After the corresponding partition plate 2 is released, the lead screw 7 is free again, and then all the elastic retractable pins 13 can be returned to the corresponding slots 14 again through the bevel gear transmission, and the transmission connection relationship between the two is restored.

[0035] In order to facilitate the unloading of the prefabricated tube sheet, Figure 7 As shown, there is a protruding strip plate portion 101 on the outer circumferential surface of the top wall of the mold body 1, which can be fixed integrally, and the strip sliding hole extends into the strip plate portion 101. The length of the strip plate portion 101 is required to enable all sliders 4 to move with their respective partition plates 2 to the outside of the mold body 1, so as to facilitate the falling of the prefabricated tube sheet. At the same time, in the present embodiment, the structure of the lead screw 7 is also very special. The thread on the lead screw 7 has several sections, and the pitch of each thread section is different. The longer the length of the partition plate 2, the corresponding thread block 9, that is, the longer the length of the partition plate 2 in the circumferential direction, the larger the pitch of the thread on the corresponding lead screw 7. In this way, when the formed prefabricated tube sheets are pushed out of the mold body 1, that is, when they are brought out of the steel mold through the partition plate 2, the distance between the two adjacent partition plates 2 will gradually increase due to the different linear movement speeds, that is, gradually exceed the thickness of the corresponding formed concrete prefabricated tube sheet, so that the tube sheet is separated from its two partition plates 2, and then when it moves outside the mold body 1, it automatically falls and is quickly demolded, which is very clever. Moreover, it is precisely because of this incremental change that the demolding of the remaining prefabricated tube sheets will not be affected. Otherwise, the rear prefabricated tube sheet will be blocked in the mold body 1 during the process of moving outside the mold body 1 because the front partition plate 2 and the prefabricated tube sheet move more slowly.

[0036] In the above embodiments, as common sense in the field, a fan-shaped concrete pouring port 102 can be adaptively set at the corresponding position of the mold body 1 to directly pour concrete into each mold cavity, and all pouring ports 102 can be covered with a cover plate of corresponding shape. If necessary, a layer of film that is not easy to adhere to the inner surface of the mold can be laid in the fan-shaped cavity. During production, for the mold body 1, it can be sampled and spliced ​​like the prior art, for example, the templates on each side can be detachably installed together, or even hinged together to form a fan-shaped cavity, so that it can be disassembled and demolded when necessary. Of course, it can also be directly formed and processed as a whole.

[0037] The present invention is not limited to the field involved in this implementation case, and some well-known structures or principles are not further described. However, ordinary technicians in the relevant field can theoretically know all the well-known technologies in this technical field before the application date or priority date, can fully master all the existing technologies in this technical field, and have the means and ability to apply these existing technologies for actual design and application. Under the technical enlightenment given by this application, technicians can improve and implement the present invention more comprehensively in combination with their own abilities. In addition, it should be pointed out that although the text and graphics of the above embodiments have shown the specific implementation occasions of the present invention, for ordinary technicians in this field, it is entirely possible to carry out a variety of obvious expansions and extensions on these embodiments without departing from the design concept of the present invention to form different embodiments, but this does not affect the scope of protection of the present invention, which is covered and embodied by the technical features of the claims and equivalent technical features.

Claims

1. A modular quick-install concrete steel mold, comprising a mold body (1) having a fan-shaped cavity inside, characterized in that: The fan-shaped cavity is provided with a plurality of concentric partition plates (2) with fan-shaped cross sections; all the partition plates (2) can move along the radial straight line of the fan-shaped cavity in the fan-shaped cavity, and when the two ends of the partition plates (2) are respectively in contact with the inner side walls of the corresponding fan-shaped cavity, the partition plates (2) are fixed in the fan-shaped cavity, so that the fan-shaped area between any two partition plates (2) constitutes a mold cavity of a certain specification and model; A stud (3) is fixed on the top surface of each partition plate (2), and the stud (3) is threadedly connected to a threaded through hole (6) on a slider (4), and when the stud (3) is screwed into the threaded through hole (6) to the bottom, the partition plate (2) is exactly located at a position concentric with the fan-shaped cavity; All the slide blocks (4) are slidably mounted in the strip-shaped slide holes provided on the top wall of the mold body (1) along the same linear direction, and the linear direction is located in the radial direction of the fan-shaped cavity; The top ends of all the sliders (4) are each fixed with a threaded block (9) through a vertical rod (5), and all the threaded blocks (9) are threadedly connected to a lead screw (7), and the lead screw (7) is located parallel to and directly above the strip-shaped sliding hole, and when the lead screw (7) rotates so that all the partition plates (2) move to be fixed to the mold body (1) as a whole, all the sliders (4) are connected in series in close contact with each other to close the strip-shaped sliding hole on the top wall of the mold body (1); The threaded block (9) comprises an outer column sleeve (901) and a threaded tube (902) coaxially located in the outer column sleeve (901); the lead screw (7) passes through the threaded tube (902) in a threaded manner; a non-hole flange (906) is provided at each end of the threaded tube (902); one end of the non-hole flange (906) is in contact with an elastic element (903) on the end surface of the outer column sleeve (901); the other end of the non-hole flange (906) is axially pressed by a locking threaded cap (904) threadedly sleeved on the end of the outer column sleeve (901), so that the threaded tube (902) and the outer column sleeve (901) are connected as a whole; and when the outer column sleeve (901) is stationary in the strip-shaped sliding hole, the threaded tube (902) rotates in the outer column sleeve (901) together with the lead screw (7).

2. A modular quick-install concrete steel formwork as claimed in claim 1, characterized in that: It also includes a plugging screw (8), which is inserted from below the threaded block (9) and screwed into the threaded through hole (6), and the bottom end surface of the plugging screw (8) is flush with the inner top surface of the fan-shaped cavity.

3. The modular quick-install concrete steel formwork according to claim 1, characterized in that: A plurality of fastening bolts (905) are also provided on the outer side of the through hole of the locking threaded cover (904) through which the lead screw (7) can freely pass axially; the fastening bolts (905) are screwed into the end of the outer column sleeve (901) or are firmly pressed against the end surface of the outer column sleeve (901).

4. The modular quick-install concrete steel formwork according to claim 1, characterized in that: The elastic element (903) is a disc spring, the large end of which is located in the annular groove on the end surface of the outer column sleeve (901), and the small end of which is fixed with a gasket, which is tightly attached to one end of the non-perforated flange (906) under the elastic action of the disc spring.

5. The modular quick-install concrete steel formwork according to claim 1, characterized in that: The mold bodies (1) are arranged in a circular array. A driven bevel gear (10) is fixed to each end of the lead screws (7) installed on all the mold bodies (1) and close to each other. All the driven bevel gears (10) are meshed with a driving bevel gear (11) at the bottom end of a vertically installed and rotatable rotating shaft (12). Each driven bevel gear (10) is connected to the corresponding lead screw (7) by at least one elastic telescopic pin (13). Under a set torque, the elastic telescopic pin (13) can slide away from a slot (14) on the lead screw (7) for inserting the elastic telescopic pin, so that when the lead screw (7) cannot rotate, the rotation of the driving bevel gear (11) causes the driven bevel gear (10) to rotate relative to the lead screw (7).

6. The modular quick-install concrete steel formwork according to claim 1, characterized in that: A protruding strip plate portion (101) is integrally fixed on the outer circumferential surface of the top wall of the mold body (1), the strip-shaped sliding hole extends into the strip plate portion (101), and the length of the strip plate portion (101) is required to enable all the sliders (4) to move with their respective partition plates (2) to the outside of the mold body (1); The thread on the lead screw (7) has a plurality of sections, the pitch of each section of the thread is different, and the longer the thread block (9) on the partition plate (2), the greater the pitch of the thread on the corresponding lead screw (7).

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