A pipe pile production die closing positioning and locking device

Abstract

The utility model relates to the technical field of pipe pile production, especially disclose a kind of pipe pile production moulding positioning locking device, including upper die and lower die, upper die and lower die side wall are provided with main positioning assembly, upper die and lower die opposite end are provided with auxiliary positioning assembly, main positioning assembly includes two connecting blocks, two connecting blocks are fixedly installed at lower die two ends respectively, two connecting blocks are fixedly installed with bushing inside, two bushings upper end portion are fixedly installed with guide sleeve, two guide sleeves are used to correct the slight deviation generated in the moulding process of upper die and lower die, the side wall of upper die both sides is fixedly installed with side strip, the equipment is cooperated by the taper fault-tolerant guide of main positioning assembly and multiple auxiliary positioning, realizes hoisting deflection compatibility ability promotion, positioning force uniform distribution to avoid die deformation, positioning precision and stability enhancement, moulding and die changing efficiency improvement.

Description

Technical Field

[0001] This utility model relates to the field of pipe pile production technology, and in particular to a pipe pile production mold closing, positioning and locking device. Background Technology

[0002] Prestressed concrete pipe piles refer to prestressed concrete piles with a circular cross-section formed by centrifugal and prestressing processes. During the production process, the mold closing and positioning locking device is the core equipment to ensure the forming accuracy and production efficiency of the pipe piles. Its performance directly affects the structural strength, appearance quality and production continuity of the pipe piles.

[0003] However, traditional devices often use a small clearance fit between the positioning pin and the pin hole. When closing an ultra-long mold, if there is a slight skew in the crane hoisting, the positioning pin will generate a significant lateral force when it is inserted into the pin hole due to "forced centering". This force is concentrated on the narrow contact area between the front end of the pin body and the inner wall of the pin hole, causing the local stress to far exceed the allowable range of the material. After long-term use, the pin body is prone to bending plastic deformation, and the inner wall of the pin hole will wear due to repeated friction and impact, which will aggravate the subsequent positioning error. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a mold closing and positioning locking device for pipe pile production. It solves the technical problem that when traditional equipment closes ultra-long molds or when the trolley has a slight deviation, the "forced centering" of the positioning pin will generate significant lateral force, which will cause the pin body to bend and deform plastically and the inner wall of the pin hole to wear after long-term use, thus aggravating the subsequent positioning error.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A pipe pile production mold closing positioning and locking device includes an upper mold and a lower mold. A main positioning component is provided on the side walls of the upper and lower molds, and an auxiliary positioning component is provided on the opposite ends of the upper and lower molds. The main positioning component includes two connecting blocks, which are respectively fixedly installed at both ends of the lower mold. A bushing is fixedly installed inside each of the two connecting blocks, and a guide sleeve is fixedly installed at the upper end of each of the two bushings. The two guide sleeves are used to correct minor offsets generated during the mold closing process of the upper and lower molds. Side strips are fixedly installed on both side walls of the upper mold, and second positioning pins are fixedly installed at the lower ends of the two side strips. Ball heads are fixedly installed at the lower ends of the two second positioning pins. During mold closing, the guide sleeves can amplify the compatibility angle of hoisting misalignment. The conical inner wall gradually eliminates lateral force and reduces insertion resistance through "progressive fitting" when the second positioning pins are inserted.

[0007] Preferably, the auxiliary positioning component includes a positioning groove and a first positioning pin. The positioning groove is equidistantly opened on the upper mold, and the first positioning pin is equidistantly installed on the lower mold and corresponds one-to-one with the positioning groove. Each first positioning pin is threaded with a fastening nut. Compared with the traditional two-set positioning, this positioning method has a multi-set layout, which makes the positioning force distribution more uniform and can avoid mold deformation caused by excessive force at a single point.

[0008] Preferably: The lower ends of the two side strips are symmetrically fixed with fixing rods, and the side walls of the lower mold are symmetrically fixed with bases. The two sets of bases have internal grooves, and the internal grooves have sliding closing strips. The internal closing strips have internal grooves that correspond to the two sets of fixing rods. Side blocks are symmetrically fixed on the two sets of closing strips. The lower ends of the two sets of fixing rods are designed as wedges. The internal grooves are wedges that fit the two sets of fixing rods. A spring is fixedly installed on each side block, and the end of each spring furthest from the side block is fixedly connected to the base. When the mold is opened, the guide sleeve can be shielded, preventing splashed concrete slurry and dust from entering the positioning gap during pipe pile production, thus avoiding positioning errors or increased wear caused by impurities.

[0009] Preferably, the lower ends of the two second positioning pins are provided with wedge-shaped grooves for cleaning the bushing during the mold closing process. The impurities in the inner wall of the bushing are scraped and cleared by the second positioning pins, the semi-solid slurry is scraped into fragments and discharged with the mold closing action, and the solid deposits are peeled off into powder and discharged, so as to avoid impurities from continuously accumulating and hardening on the inner wall of the bushing 7.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] This equipment achieves enhanced hoisting skew compatibility, uniform distribution of positioning force to avoid mold deformation, improved positioning accuracy and stability, and increased efficiency in mold closing and changing through the synergistic effect of the conical misalignment guidance of the main positioning component and multiple sets of auxiliary positioning. At the same time, it reduces mechanical damage, lowers the operating threshold, and comprehensively adapts to the high-precision flexible production needs of large-diameter / ultra-long pipe piles, significantly improving production efficiency and equipment life. Attached Figure Description

[0012] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0013] Figure 1 This is a structural diagram of the mold-closed state of this utility model;

[0014] Figure 2 This is a structural diagram of the mold opening state of this utility model;

[0015] Figure 3 This is a diagram of the side strip connection structure of this utility model;

[0016] Figure 4 This is a diagram of the second locating pin connection structure of this utility model;

[0017] Figure 5 This is an exploded view of the closure strip connection of this utility model;

[0018] Figure 6 This is an exploded structural diagram of the base connection of this utility model.

[0019] Legend: 1. Upper mold; 2. Positioning groove; 3. Lower mold; 4. First positioning pin; 5. Fastening nut; 6. Connecting block; 7. Bushing; 8. Guide sleeve; 9. Side strip; 10. Second positioning pin; 11. Wedge groove; 12. Ball head; 13. Fixing rod; 14. Base; 15. Slide groove; 16. Closing strip; 17. Inner groove; 18. Side block; 19. Spring. Detailed Implementation

[0020] This application provides a mold closing and positioning locking device for pipe pile production. It effectively solves the problem that in traditional equipment, when closing ultra-long molds or when the crane has slight deviations, the "forced centering" of the positioning pin will generate significant lateral force. Long-term use will cause the pin to bend and deform plastically, and the inner wall of the pin hole will wear, which will aggravate the subsequent positioning error. This device achieves improved hoisting deviation compatibility, uniform distribution of positioning force to avoid mold deformation, enhanced positioning accuracy and stability, and improved mold closing and mold changing efficiency through the conical misalignment guidance of the main positioning component and the synergistic effect of multiple sets of auxiliary positioning.

[0021] Example 1: As Figure 2 , Figure 3 and Figure 4As shown, the technical solution in this application effectively solves the technical problem that in traditional equipment, when the mold is closed with an ultra-long mold and the crane has a slight deviation, the "forced centering" of the positioning pin insertion will generate a significant lateral force, which will cause the pin body to bend and deform plastically and the inner wall of the pin hole to wear after long-term use, thus aggravating the subsequent positioning error. The overall idea is as follows: A mold closing positioning and locking device for pipe pile production includes an upper mold 1 and a lower mold 3. The upper mold 1 and the lower mold 3 are provided with a main positioning component on their side walls, and auxiliary positioning components are provided on opposite ends of the upper mold 1 and the lower mold 3. The main positioning component includes two connecting blocks 6, which are respectively fixedly installed at both ends of the lower mold 3. A bushing 7 is fixedly installed inside each of the two connecting blocks 6, and a guide sleeve 8 is fixedly installed at the upper end of each of the two bushings 7. The bushings 7 and the guide sleeve 8 adopt a high-strength brass + graphite self-lubricating structure, which can reduce the lubrication requirement by 80%. At the same time, the toughness of brass can absorb the impact and avoid contact with the guide pin. Wear caused by rigid collision is corrected by two guide sleeves 8, which are used to correct minor misalignments during the mold closing process of the upper mold 1 and the lower mold 3. Side strips 9 are fixedly installed on both side walls of the upper mold 1, and second positioning pins 10 are fixedly installed at the lower ends of the two side strips 9. Ball heads 12 are fixedly installed at the lower ends of the two second positioning pins 10. First, the upper mold 1 is hoisted above the lower mold 3 using a crane. Then, the position is adjusted so that the ball heads 12 on the upper mold 1 are aligned with the guide sleeves 8. When the upper mold 1 is lowered, the ball heads 12 will be inserted into the guide sleeves 8. At this time, the guide sleeves 8 can amplify the compatibility angle of the hoisting deviation. The conical inner wall gradually eliminates the lateral force and reduces the insertion resistance through "progressive fitting" when the second positioning pins 10 are inserted. Then, the guide sleeves 8 are inserted into the bushings 7 to complete the positioning.

[0022] Example 2: Figure 1 As shown, the auxiliary positioning component includes a positioning groove 2 and a first positioning pin 4. The positioning groove 2 is equidistantly opened on the upper mold 1, and the first positioning pin 4 is equidistantly installed on the lower mold 3 and corresponds one-to-one with the positioning groove 2. Each first positioning pin 4 is threaded with a fastening nut 5. During the positioning process of the main positioning component, multiple first positioning pins 4 will also be inserted into the positioning groove 2. Then, the auxiliary positioning of the upper mold 1 and the lower mold 3 can be completed by rotating the fastening nut 5 on the first positioning pin 4. Compared with the traditional two-set positioning, this positioning method makes the positioning force distribution more uniform and can avoid mold deformation caused by excessive force at a single point.

[0023] Example 3: As Figure 3 , Figure 5 and Figure 6As shown, fixing rods 13 are symmetrically fixedly installed at the lower ends of the two side strips 9. Bases 14 are symmetrically fixedly installed on both side walls of the lower mold 3. Slide grooves 15 are opened inside the two sets of bases 14. Sealing strips 16 are slidably installed inside the two sets of slide grooves 15. Inner grooves 17 are opened inside the two sets of sealing strips 16, which are directly opposite to the two sets of fixing rods 13. Side blocks 18 are symmetrically fixedly installed on the two sets of sealing strips 16. The lower ends of the two sets of fixing rods 13 are designed as wedges. The two sets of inner grooves 17 are wedges adapted to the two sets of fixing rods 13. A spring 19 is fixedly installed on each side block 18. The end of each spring 19 away from the side block 18 is fixedly connected to the base 14. Next, during mold closing and positioning, the two fixing rods 13 on the side strip 9 will be inserted into the two inner grooves 17. Since the inner grooves 17 and the fixing rods 13 are wedge-shaped, the movement of the two fixing rods 13 will push the two sliding grooves 15 to slide towards the two bases 14. At this time, the two sets of springs 19 will be compressed. When the mold is opened, the two fixing rods 13 will be pulled out from the two inner grooves 17. After losing the squeezing force, the two sets of springs 19 will restore their deformation and drive the two closing strips 16 to fit together, thereby blocking the guide sleeve 8 and preventing the concrete slurry and dust splashed during the production of the pipe pile from entering the positioning gap, thus avoiding positioning errors or aggravated wear caused by impurities.

[0024] Both of the lower ends of the two second positioning pins 10 are provided with wedge-shaped grooves 11 for cleaning the bushing 7 during the mold closing process. When the mold is closed, the second positioning pins 10 will contact the inner wall of the bushing 7, and the two will generate friction. The impurities in the inner wall of the bushing 7 are scraped and cleared by the second positioning pins 10, and the semi-solid slurry is scraped into fragments and discharged with the mold closing action. The solid deposits are peeled off into powder and discharged, thus preventing impurities from continuously accumulating and hardening on the inner wall of the bushing 7.

[0025] To address the problems existing in the prior art, this utility model provides a mold closing, positioning, and locking device for pipe pile production. This device achieves improved hoisting skew compatibility, uniform distribution of positioning force to avoid mold deformation, enhanced positioning accuracy and stability, and improved mold closing and changing efficiency through the conical misalignment guidance of the main positioning component and the synergistic effect of multiple sets of auxiliary positioning.

[0026] Working principle:

[0027] First, use a crane to hoist the upper mold 1 above the lower mold 3. Then, adjust the position so that the ball head 12 on the upper mold 1 is aligned with the guide sleeve 8. When the upper mold 1 is lowered, the ball head 12 will be inserted into the guide sleeve 8. The guide sleeve 8 can amplify the compatibility angle of the hoisting tilt. When the second positioning pin 10 is inserted, the conical inner wall gradually eliminates the lateral force through "progressive fitting" and reduces the insertion resistance. Then, the guide sleeve 8 is inserted into the bushing 7 to complete the positioning. During the positioning process of the main positioning component, multiple first positioning pins 4 will also be inserted into the positioning groove 2. Then, the upper mold 1 and the lower mold 3 can be auxiliary positioned by rotating the fastening nut 5 on the first positioning pin 4. Compared with the traditional two-set positioning, this positioning method has a multi-set layout, which makes the positioning force distribution more uniform and can avoid mold deformation caused by excessive force at a single point.

[0028] In the second step, during mold closing and positioning, the two fixing rods 13 on the side strip 9 will be inserted into the two inner grooves 17. Since both the inner grooves 17 and the fixing rods 13 are wedge-shaped, the movement of the two fixing rods 13 will push the two sliding grooves 15 towards the two bases 14. At this time, the two sets of springs 19 will be compressed. When the mold is opened, the two fixing rods 13 will be pulled out from the two inner grooves 17. After losing the squeezing force, the two sets of springs 19 will restore their deformation and drive the two sealing strips 16 to fit together, thereby blocking the guide sleeve 8 and preventing the concrete slurry and dust splashed during the production of the pipe pile from entering the positioning gap, thus avoiding positioning errors or aggravated wear caused by impurities.

[0029] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A mold closing, positioning, and locking device for pipe pile production, comprising an upper mold (1) and a lower mold (3), characterized in that, The upper mold (1) and the lower mold (3) are provided with main positioning components on their side walls, and auxiliary positioning components are provided on their opposite ends; The main positioning component includes two connecting blocks (6), which are fixedly installed at both ends of the lower mold (3). A bushing (7) is fixedly installed inside each of the two connecting blocks (6), and a guide sleeve (8) is fixedly installed at the upper end of each of the two bushings (7). The two guide sleeves (8) are used to correct the slight offset generated during the mold closing process of the upper mold (1) and the lower mold (3). Side strips (9) are fixedly installed on both sides of the upper mold (1), and second positioning pins (10) are fixedly installed at the lower ends of the two side strips (9), and ball heads (12) are fixedly installed at the lower ends of the two second positioning pins (10).

2. The pipe pile production mold closing, positioning, and locking device as described in claim 1, characterized in that, The auxiliary positioning component includes a positioning groove (2) and a first positioning pin (4), wherein the positioning groove (2) is equidistantly opened on the upper mold (1); The first positioning pin (4) is equidistantly installed on the lower mold (3) and corresponds one-to-one with the positioning groove (2). Each of the first positioning pins (4) is threaded with a fastening nut (5).

3. The pipe pile production mold closing, positioning, and locking device as described in claim 1, characterized in that, The lower ends of the two side strips (9) are symmetrically fixed with fixing rods (13); The lower mold (3) has bases (14) symmetrically fixedly installed on both sides of its sidewalls.

4. The pipe pile production mold closing, positioning, and locking device as described in claim 3, characterized in that, Both sets of bases (14) have grooves (15) inside; In both sets of the slide grooves (15), a sealing strip (16) is slidably installed inside.

5. The pipe pile production mold closing, positioning, and locking device as described in claim 4, characterized in that, Both sets of the sealing strips (16) have an inner groove (17) that is directly opposite to the two sets of fixing rods (13). In this case, side blocks (18) are symmetrically fixedly installed on both sets of the sealing strips (16).

6. The pipe pile production mold closing, positioning, and locking device as described in claim 5, characterized in that, A spring (19) is fixedly installed on each of the side blocks (18); In this case, the end of each spring (19) away from the side block (18) is fixedly connected to the base (14).

7. The pipe pile production mold closing, positioning, and locking device as described in claim 1, characterized in that, Both of the second positioning pins (10) are provided with wedge grooves (11) at their lower ends for cleaning the bushing (7) during the mold closing process.

8. The pipe pile production mold closing, positioning, and locking device as described in claim 5, characterized in that, The lower ends of both sets of fixing rods (13) are designed to be wedge-shaped; Both sets of inner grooves (17) are wedge-shaped and adapted to the two sets of fixed rods (13).

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