A pre-buried groove connecting structure with automatic separation function

Abstract

The utility model discloses a kind of pre-embedded groove connecting structures with automatic separation function, it is related to tunnel design technical field, and it includes: cylinder bracket, cylinder, T type pull rod module;Cylinder bracket is fixed in mould inner arc surface, the cylinder body of cylinder is fixed on cylinder bracket, the piston rod rod end of cylinder is connected with the one end of T type pull rod module, the other end of T type pull rod module is a "T" letter head, and this "T" letter head is inserted into channel;Wherein, T type pull rod module includes: pull rod, pull rod cap and pull rod cap pin shaft;Pull rod passes through the end surface of pull rod cap, and the side of pull rod cap is crossed by pull rod cap pin shaft;Pull rod cap pin shaft is separated under fixed shearing force.The utility model provides a kind of pre-embedded groove connecting structures with automatic separation function, solves the air leakage problem when high-frequency vibration, can actively trigger protection mechanism when slurry leakage or operation error, avoid chain structure damage.

Description

Technical Field

[0001] This invention relates to the field of tunnel design technology, and more specifically to a pre-embedded slot connection structure with automatic separation function. Background Technology

[0002] In shield tunnel construction, the pre-embedded channels for tunnel segments serve as a crucial structure for connecting and securing auxiliary equipment, and their reliability directly impacts construction safety and subsequent operation and maintenance efficiency. Traditional methods for connecting pre-embedded channels to tie rods often employ rigid fixing structures, such as using bolts or welding to achieve a permanent connection between the tie rod cap and the tie rod. However, this design has significant drawbacks during the lifting and separation of tunnel segments: Risk of jamming due to grout leakage: If concrete grout leaks after the segment is assembled, the grout may seep into the joint surface between the tie rod cap and the tie rod, and after solidification, it will form an adhesion, making it impossible to separate properly during subsequent lifting and separation. In severe cases, it may even cause the channel structure to tear or the tie rod to break. High dependence on human operation: Existing technology requires manual removal of the fixing device (such as disassembling bolts or cutting safety pins) before lifting. If the operation is missed or not carried out according to the procedure, the rigid connection between the tie rod cap and the tie rod will directly transmit abnormal loads, causing deformation of the channel or damage to the pre-embedded equipment below (such as grouting pipes and sensors). Lack of passive protection mechanisms: Although the anti-adhesion coatings or lubrication structures proposed in existing patents can alleviate slurry adhesion, they cannot cope with sudden overload conditions and additionally increase process complexity and maintenance costs.

[0003] To address the aforementioned issues, there is an urgent need to develop a pre-embedded groove connection structure with automatic separation function. This structure should ensure reliable connection under normal working conditions while proactively triggering a protection mechanism in case of grout leakage or operational errors, thus preventing cascading structural damage. Summary of the Invention

[0004] In view of this, the present invention provides a pre-embedded groove connection structure with automatic separation function, which solves the air leakage problem during high-frequency vibration. While ensuring reliable connection under normal working conditions, it can actively trigger a protection mechanism in case of grout leakage or operational errors, so as to avoid chain structural damage.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An embedded groove connection structure with automatic separation function includes: a cylinder bracket, a cylinder, and a T-shaped tie rod module; the cylinder bracket is fixed on the inner arc surface of the mold, the cylinder body is fixed on the cylinder bracket, the piston rod end of the cylinder is connected to one end of the T-shaped tie rod module, and the other end of the T-shaped tie rod module is a "T"-shaped head that is inserted into the groove; wherein, the T-shaped tie rod module includes: a tie rod, a tie rod cap, and a tie rod cap pin; the tie rod passes through the end face of the tie rod cap, and the side of the tie rod cap passes through the tie rod cap pin; the tie rod cap pin is fixed to separate under shear force.

[0006] With the above solution, this invention includes a cylinder bracket, a cylinder, a T-shaped tie rod module, and a tie rod protective sleeve. The cylinder, fixed on the mold, can drive the T-shaped tie rod module to extend into the channel and pull it back, tightly fitting the channel to the mold surface. Before concrete pouring and vibration, an air source is connected, ensuring the channel remains continuously clamped during overall mold vibration, preventing loosening. After vibration, once the segment has solidified, the cylinder drives the T-shaped tie rod module to rise and rotate 90 degrees to detach it from the channel for lifting. This invention's automatic clamping and releasing occurs between each process step, maintaining continuous clamping after channel installation, thus ensuring a fixed distance between the channel and the template. After segment formation, the channel and segment have stable dimensions, guaranteeing product quality. It offers advantages such as high installation efficiency, low material consumption, no need to damage the channel, and high-quality channel pre-embedding.

[0007] In addition, the overall tie rod has been improved to a split design. The tie rod cap pin has been calculated to withstand 200 kg of tension without deformation. During lifting and separation, if grout leakage occurs or the operation is forgotten, the tie rod cap pin will be sheared under gravity, separating the tie rod cap and tie rod. This protects the integrity of the channel and the underlying device. At the same time, lifting 300 kg can easily cut the pin, making installation and maintenance easier. Lifting can cut off the tie rod cap pin, protecting the segments and devices, making operation more intelligent and maintenance and installation safer.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the pull rod is provided with a pull rod sealing sleeve and a pull rod protective sleeve; the pull rod sealing sleeve is fitted on the contact section between the pull rod and the channel; the pull rod protective sleeve is provided on the contact section between the pull rod and the mold base plate.

[0010] Through the above technical solution, the beneficial effects of the present invention are as follows: the tie rod sealing sleeve is a rubber seal to prevent grout leakage from affecting the movement of the device; the tie rod protective sleeve is made of Teflon, which is acid and alkali resistant, wear-resistant, and high-temperature resistant, and has self-lubricating properties. The improved structure with added undercuts allows for a more reliable clamping onto the mold, achieving sealing and rotational action. The two combinations form a reliable double seal, greatly reducing the impact of grout leakage.

[0011] Furthermore, the present invention also includes a pneumatic control mechanism and a signal indicating device. The pneumatic control mechanism is connected to the cylinder via a pipe to control the cylinder's movement. The pneumatic control mechanism includes a pneumatic switch, a pressure holding valve, and a cylinder. The cylinder is controlled by the pneumatic switch, which is connected to the inlet of the pressure holding valve via a first pipe. The inlets of each cylinder are connected to the pressure holding valve via a T-junction. The outlet of the pneumatic switch is connected to the outlet of each cylinder via a second pipe. The outlet of the pneumatic switch is connected to another channel of the pressure holding valve via a T-junction. Gas is discharged normally from the cylinder, and the cylinder operates normally.

[0012] Furthermore, the device achieves both upward and downward movement and rotation through pneumatic and mechanical structures. During this movement, the device's indicator lights will illuminate as the clamping and releasing mechanisms open and close.

[0013] Furthermore, the cylinder includes a front cover, a cylinder body, and a piston; the cylinder body is provided with a first through hole and a second through hole for air inlet and outlet; the front cover is fixedly connected to the cylinder body; the piston is placed inside the cylinder body; it also includes: a connecting rod and a motion guide rail; the connecting rod and the motion guide rail are movably connected; the lower end face of the motion guide rail is provided with a groove; the groove is provided with an internal thread; the piston has a through hole, and the fixing screw passes through the through hole to thread the motion guide rail and the piston; the track of the motion guide rail cooperates with the steel ball in the steel ball fixing ring; the steel ball cooperates with the motion guide rail to make it rotate and compound in the air inlet and outlet; the motion guide rail passes through the front cover and is locked into the positioning hole on the steel ball fixing ring by a positioning screw; the positioning screw is installed on the front cover, and the outside of the front cover is wrapped by the cylinder body, so the positioning screw cannot be removed, realizing automatic anti-loosening.

[0014] Through the above technical solutions, the beneficial effects of the present invention are as follows: the specially designed pull rod connection structure, made entirely of stainless steel, is an integrated structure that ensures the stability of the device; the front guide rail steel ball fixing ring has been improved to an integral screw, utilizing the natural space of the cylinder to prevent the screw from loosening and ensuring that the steel ball does not fall out, thus greatly enhancing the stability of the device; in addition, the through hole connecting the piston and the guide rail has been changed to a thread, and the guide rail and piston are fastened together with thread-locking adhesive to form an integral effect, greatly improving the concentricity of the assembly and the sealing effect.

[0015] Furthermore, at least two sealing grooves are provided inside the front cover; a dustproof sealing ring and a first sealing ring are respectively installed in the sealing grooves.

[0016] The further beneficial effects of adopting the above are: the addition of a dustproof sealing ring and a first sealing ring greatly reduces air leakage; the sealing ring acts as a bearing, making the device move more smoothly and steadily; in addition, the dustproof sealing ring can prevent foreign objects from entering the device in an environment where dust and other fine foreign objects are scattered.

[0017] Furthermore, the motion guide rail is provided with a strip-shaped hole; a mounting pin passes through the strip-shaped hole.

[0018] The further beneficial effect of adopting the above is that the connection of the motion guide rail is a vertical elongated hole, which can move up and down.

[0019] Furthermore, the motion guide rail passes through the spring.

[0020] The further beneficial effects of employing the above-mentioned methods are: the spring can generate continuous and stable pressure, which is crucial for ensuring the tight fit of the internal components of the cylinder. During mechanical operation, various components need to maintain a certain pressure and tightness to ensure the stability and efficiency of the entire system. The spring, through its elastic force, can effectively maintain this necessary pressure. Various impacts and vibrations are often generated during mechanical operation. The spring can act as a good buffer, reducing the damage of these impacts to the mechanical system. When external forces act on the cylinder, the spring can absorb part of the impact force, protecting the internal components of the cylinder from damage. Furthermore, after the mechanical movement is completed, the spring can help the components return to their initial position, preparing for the next mechanical movement. This reset function is very important for maintaining the continuity and stability of the mechanical system.

[0021] Furthermore, the upper surface of the piston has a positioning groove that matches the motion guide rail, and the lower surface of the piston matches the nut of the fixing screw; a second sealing ring is provided between the piston and the motion guide rail.

[0022] The further beneficial effects of adopting the above are: after the motion guide rail and piston are fastened with thread-locking adhesive, they form an integral effect, which greatly improves the concentricity of the assembly and the sealing effect. It forms a double seal with the second sealing ring, effectively reducing air leakage and ensuring stable and reliable tension of the device.

[0023] Furthermore, the connecting rod includes a device connecting rod and a device separation module connecting rod; the device connecting rod and the device separation module connecting rod are movably connected.

[0024] The further beneficial effect of adopting the above is that the detachable connecting rod is divided into two sections: one is the device connecting rod, and the other is the device separation module connecting rod, which are fixed together by a pin and a cotter pin. The device separation module connecting rod has a threaded structure and a pin hole structure inside, and the inner hole is designed with the required connection shape to facilitate connection with other related components.

[0025] Furthermore, anti-collision pad mounting grooves are respectively provided on the upper and lower surfaces of the piston; anti-collision pads are placed in the anti-collision pad mounting grooves.

[0026] The further beneficial effects of using the above-mentioned materials are as follows: The anti-collision pad absorbs the impact energy generated at the end of the piston's high-speed movement through the compression and rebound characteristics of elastic materials (such as rubber and polyurethane), preventing damage caused by direct impact from metal parts. Its material damping characteristics can significantly reduce mechanical vibration and noise caused by the reciprocating motion of the piston, improving the stability of equipment operation. By reducing rigid collisions between the piston and the cylinder end cover, it prevents problems such as cylinder inner wall deformation and seal wear, thus reducing maintenance frequency. Furthermore, the steel ball retaining ring includes a first retaining ring and a second retaining ring; the first retaining ring and the second retaining ring cooperate, and a steel ball is installed between the first retaining ring and the second retaining ring; the steel ball cooperates with the motion guide rail, so that it rotates and combines in the air intake and exhaust.

[0027] The further beneficial effect of the above-mentioned method is that the guide steel balls are inserted into the two specially designed mounting holes of the first fixing ring, and the holes are angled to prevent the steel balls from falling out during positioning. The second fixing ring is then fitted onto the outside of the first positioning ring, aligned with the positioning holes to ensure accurate positioning, and then installed into the front cover of the device after assembly.

[0028] Furthermore, the second fixing ring is provided with a positioning hole, and the positioning screw cooperates with the positioning hole; the positioning screw is installed on the front cover, and the outside of the front cover is wrapped by the cylinder body, so the positioning screw cannot be pulled out, thus achieving automatic anti-loosening.

[0029] The further beneficial effect of the above is that the steel ball is connected to the motion guide rail. At this time, two positioning screws are locked into the positioning holes of the first fixing ring on both sides of the front cover of the device to fix its direction.

[0030] Furthermore, a sealing ring mounting groove is provided on the piston side surface, and a third sealing ring is provided in the sealing ring mounting groove.

[0031] The further beneficial effect of adopting the above is to achieve a sealing effect. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0033] Figure 1 A three-dimensional schematic diagram provided for this invention; Figure 2 A cross-sectional view of the T-shaped tie rod module provided by the present invention; Figure 3 This is an exploded view of the cylinder provided for this invention.

[0034] In the diagram: 1. Device separation module connecting rod; 2. Cotter pin; 3. Device connecting rod; 4. Dustproof sealing ring; 5. First sealing ring; 6. Spring; 7. Mounting pin; 8. Motion guide rail; 9. Steel ball; 10. First fixing ring; 11. Second fixing ring; 12. Second sealing ring; 13. Fixing screw; 14. Headless fixing screw; 15. Pin shaft; 16. Front cover; 17. Fourth sealing ring; 18. Positioning screw; 19. Third sealing ring; 20. Anti-collision pad; 21. Piston; 22. Cylinder body; 23. Cylinder bracket; 24. Pull rod; 25. Pull rod cap; 26. Pull rod cap pin shaft; 27. Pull rod sealing sleeve; 28. Pull rod protective sleeve; 29. ​​Mold base plate; 30. Tube segment product; 31. Embedded channel; 32. Rubber strip; 33. Sponge liner; 100. Cylinder; 151. Pull rod pin shaft; 201. Second cotter pin. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] like Figure 1-3 An embodiment of the present invention discloses a pre-embedded groove connection structure with automatic separation function, including: a cylinder bracket 23, a cylinder 100, and a T-shaped tie rod module; the cylinder bracket 23 is fixed on the inner arc surface of the mold, the cylinder body of the cylinder 100 is fixed on the cylinder bracket 23, the piston rod end of the cylinder 100 is connected to one end of the T-shaped tie rod module, and the other end of the T-shaped tie rod module is a "T"-shaped head, which is inserted into the groove; wherein, the T-shaped tie rod module includes: a tie rod 24, a tie rod cap 25, and a tie rod cap pin 26; the tie rod 24 passes through the end face of the tie rod cap 25, and the side of the tie rod cap 25 is transversely traversed by the tie rod cap pin 26; the tie rod cap pin 26 is fixed to separate under shear force.

[0037] Furthermore, the pull rod 24 is provided with a pull rod sealing sleeve 27 and a pull rod protective sleeve 28; the pull rod sealing sleeve 27 is sleeved on the contact section between the pull rod 24 and the channel; the pull rod protective sleeve 28 is provided on the contact section between the pull rod and the mold base plate 29.

[0038] The tie rod sealing sleeve 27 is a rubber seal to prevent grout leakage from affecting the movement of the device. The tie rod protective sleeve 28 is made of Teflon, which is acid and alkali resistant, wear resistant, and high temperature resistant. It is self-lubricating, and its improved structure with added undercuts allows for a more reliable clamping onto the mold, achieving both sealing and rotational operation. The two components together form a reliable double seal, greatly reducing the impact of grout leakage.

[0039] The cylinder is mounted on the cylinder bracket 23 using bolts, special anti-loosening washers, and spring washers to prevent it from loosening during vibration. The cylinder bracket 23 is welded to the lower arc surface of the mold base plate. A 12mm hole is drilled in the mold base plate, and a special pull rod protective sleeve 28 is inserted into the hole. The pull rod 24 and pull rod cap 25 are connected by a pull rod cap pin 26. The pull rod sealing sleeve 27 is inserted from bottom to top from the tail of the pull rod 24. The device separation module connecting rod and the device moving body are fixed by a pin 15 and a cotter pin 2. Different heights of the device separation module connecting rod can be replaced according to specific needs to adapt to different molds. After assembly, the pull rod passes through the pull rod protective sleeve from above and is fixed to the device separation module connecting rod by a pull rod pin 151 and a second cotter pin 201.

[0040] Furthermore, the above-mentioned device is applied in the pre-embedded channel 31 opened on the tube segment product 30; a sponge liner 33 is provided in the pre-embedded channel 31, and an adhesive strip 32 is provided between the tube segment product 30 and the mold base plate 29. In this embodiment of the invention, a cylinder fixed on the mold can drive a T-shaped tie rod module to extend into the channel and pull it back, so that the channel is tightly attached to the mold surface. Before the concrete is poured and the vibration is started, the air source is connected to ensure that the channel is continuously clamped during the overall vibration of the mold, so as to ensure that the channel does not loosen. After the vibration ends and the segment solidifies, the cylinder drives the T-shaped tie rod module to rise and rotate 90 degrees to detach it from the channel so as to lift the segment.

[0041] The automatic clamping and loosening in this embodiment of the invention occurs between each process flow and after the channel is installed, it is in a continuous clamping state, thereby ensuring that the channel and the template maintain a fixed distance. After the tube segment is formed, the channel and the tube segment have stable dimensions, ensuring product quality. It has the advantages of high installation efficiency, low material consumption, no need to damage the channel, and high channel pre-embedding quality.

[0042] In addition, the overall tie rod has been improved to a split design, and the tie rod cap pin has been calculated to withstand 200 kg of tension without deformation; During lifting and separation, if grout leakage occurs or the operation is forgotten, the tie rod cap pin will be sheared under gravity, separating the tie rod cap and tie rod. This protects the integrity of the channel and the underlying device. Lifting 300 kg can easily cut the tie rod cap pin, making installation and maintenance easier. Lifting can cut off the tie rod cap pin, protecting the segments and device, making operation more intelligent and maintenance and installation safer.

[0043] Furthermore, this embodiment of the invention also includes a pneumatic control mechanism and a signal indicating device 34. The pneumatic control mechanism is connected to the cylinder 100 via a pipe and controls the cylinder 100 to move. The pneumatic control mechanism includes a pneumatic switch, a pressure holding valve, and the cylinder 100. The cylinder 100 is controlled by the pneumatic switch. The pneumatic switch is connected to the air inlet of the pressure holding valve via a first pipe. The air inlets of each cylinder 100 are connected to the pressure holding valve via a T-junction. The air outlet of the pneumatic switch is connected to the air outlet of each cylinder 100 via a second pipe. The air outlet of the pneumatic switch is connected to another channel of the pressure holding valve via a T-junction. Gas is discharged normally from the cylinder 100, and the cylinder 100 works normally.

[0044] Furthermore, the device achieves both upward and downward movement and rotation through pneumatic and mechanical structures. During this movement, the device's indicator lights will illuminate as the clamping and releasing mechanisms open and close.

[0045] In some specific embodiments, this embodiment also discloses a cylinder 100, including a front cover 16, a cylinder body 22, and a piston 21; the cylinder body 22 is provided with a first through hole and a second through hole for air inlet and outlet; the front cover 16 is fixedly connected to the cylinder body 22; specifically, it is held in place on the front cover by a retaining ring and locked on the side by a fastening screw; the piston 21 is placed inside the cylinder body 22; it also includes: a connecting rod and a motion guide rail 8; the connecting rod and the motion guide rail 8 are movably connected; the lower end face of the motion guide rail 8 is provided with a groove; the groove is provided with an internal thread; the piston 21 is provided with a through hole, a fixing screw 13 passes through the threaded hole, the fixing screw 13 is padded with an anti-loosening washer and applied with thread fixing glue, and screwed into the threaded hole; the track of the motion guide rail 8 cooperates with the steel ball in the steel ball fixing ring; the motion guide rail 8 passes through the front cover 16 and is locked into the positioning hole on the steel ball fixing ring by a positioning screw 18.

[0046] In some specific embodiments, at least two sealing grooves are provided inside the front cover 16; the sealing grooves are respectively fitted with a dustproof sealing ring 4 and a first sealing ring 5.

[0047] Furthermore, the front cover 16 is secured by headless fixing screws 14.

[0048] In this embodiment, a dustproof sealing ring 4 is provided to prevent foreign objects from entering the interior in an environment where dust and other small foreign objects are scattered.

[0049] Furthermore, multiple first sealing rings 5 ​​are provided, which, together with the dustproof sealing ring 4, greatly reduce air leakage. The sealing rings act as bearings, making the device move more smoothly and steadily.

[0050] Furthermore, a fourth sealing ring 17 is also provided on the contact surface between the front cover 16 and the cylinder 22.

[0051] In some specific embodiments, the motion guide rail 8 is provided with a strip-shaped hole; the mounting pin 7 passes through the strip-shaped hole.

[0052] In some specific embodiments, the motion guide 8 passes through the spring 6.

[0053] In some specific embodiments, the upper surface of the piston 21 has a positioning groove that matches the motion guide rail 8, and the lower surface of the piston 21 matches the nut of the fixing screw 13; a second sealing ring 12 is provided between the piston 21 and the motion guide rail 8.

[0054] In some specific embodiments, the connecting rod includes a device connecting rod 3 and a device separation module connecting rod 1; the device connecting rod 3 and the device separation module connecting rod 1 are movably connected.

[0055] Furthermore, the device connecting rod 3 and the device separation module connecting rod 1 are fixedly connected by a pin 15 and a cotter pin 2.

[0056] In some specific embodiments, anti-collision pad 20 mounting grooves are respectively provided on the upper and lower surfaces of the piston 21; anti-collision pad 20 is placed in the anti-collision pad 20 mounting groove.

[0057] In some specific embodiments, the steel ball retaining ring includes a first retaining ring 10 and a second retaining ring 11; the first retaining ring 10 and the second retaining ring 11 cooperate, and a steel ball 9 is installed between the first retaining ring 10 and the second retaining ring 11; the steel ball 9 cooperates with the motion guide rail 8, so that it rotates and combines in the air intake and exhaust.

[0058] In some specific embodiments, the second fixing ring 11 is provided with a positioning hole, and the positioning screw 18 cooperates with the positioning hole; the positioning screw 18 is installed on the front cover, and the outside of the front cover is wrapped by the cylinder body, so the positioning screw 18 cannot be pulled out, thus achieving automatic anti-loosening.

[0059] In some specific embodiments, a sealing ring mounting groove is provided on the side surface of the piston 21, and a third sealing ring 19 is provided in the sealing ring mounting groove.

[0060] As shown in the figure, the dustproof sealing ring 4 and the two first sealing rings 5 ​​are installed on the inside of the front cover 16 to prevent dust and seal. The three sealing rings can achieve double sealing and better guidance. The connecting rod and the motion guide rail 8 are connected by the mounting pin 7. The connection point of the motion guide rail 8 is a vertical elongated hole, so it can move up and down.

[0061] Insert the assembled connecting rod and motion guide rail 8 into the front cover 16, and install a spring 6 on the rear motion guide rail 8. The guide steel balls are installed into the two specially designed mounting holes of the first fixing ring 10. The holes are angled to control the positioning of the steel balls and prevent them from falling out.

[0062] The second fixing ring 11 is attached to the outside of the first fixing ring 10, aligned with the positioning hole to ensure accurate positioning. After assembly, the front cover 16 is installed so that the steel ball is connected to the track of the motion guide rail 8. At this time, two positioning screws 18 are locked into the positioning holes of the first fixing ring 10 to fix its direction.

[0063] Two sealing grooves are also provided on the contact surface between the front cover 16 and the cylinder 22 to achieve a sealing effect.

[0064] With the screw 13 facing upwards, tighten it into the piston 21 using a spring washer and thread sealant.

[0065] The third sealing ring 19 is installed in the side sealing groove of the piston 21.

[0066] Install the two anti-collision pads 20 into the anti-collision pad 20 mounting slots on the upper and lower sides of the piston 21, respectively. Apply thread sealant to the fixing screws 13 and tighten the remaining threads on the piston 21 into the threaded connection part at the rear end of the motion guide rail 8.

[0067] After the above assembly is completed, insert the assembled workpiece into the device cylinder 22 from above, and then fix it with snap ring screws.

[0068] The connecting rod has two structures: integral and detachable. The detachable connecting rod is divided into two sections: one is the device connecting rod 3, and the other is the device separation module connecting rod 1. The two are fixed together with a pin 15 and a cotter pin 2. The device separation module connecting rod 1 has a threaded structure and a pin hole structure inside. The inner hole is designed with the required connection shape to facilitate connection with other related components.

[0069] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0070] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pre-embedded groove connection structure with automatic separation function, characterized in that, include: The system comprises a cylinder bracket, a cylinder, and a T-shaped tie rod module. The cylinder bracket is fixed to the inner arc surface of the mold, the cylinder body is fixed to the cylinder bracket, the piston rod end of the cylinder is connected to one end of the T-shaped tie rod module, and the other end of the T-shaped tie rod module is a "T"-shaped head that inserts into a groove. The T-shaped tie rod module includes a tie rod, a tie rod cap, and a tie rod cap pin. The tie rod passes through the end face of the tie rod cap, and the side of the tie rod cap passes through the tie rod cap pin. The tie rod cap pin is fixed to separate under shear force.

2. The pre-embedded groove connection structure with automatic separation function according to claim 1, characterized in that, The pull rod is provided with a pull rod sealing sleeve and a pull rod protective sleeve; the pull rod sealing sleeve is fitted on the contact section between the pull rod and the channel; the pull rod protective sleeve is set on the contact section between the pull rod and the mold base plate.

3. The pre-embedded groove connection structure with automatic separation function according to claim 1, characterized in that, The cylinder includes a front cover, a cylinder body, and a piston; the cylinder body has a first through hole and a second through hole for air inlet and outlet; the front cover is fixedly connected to the cylinder body; the front cover has at least two sealing grooves; the sealing grooves are respectively fitted with a dustproof sealing ring and a first sealing ring; the piston is placed inside the cylinder body; it also includes a connecting rod and a motion guide rail; the connecting rod and the motion guide rail are movably connected; the lower end face of the motion guide rail has a slot; the slot has an internal thread; the piston has a through hole, through which a fixing screw passes to thread the motion guide rail and the piston; the track of the motion guide rail mates with a steel ball in a steel ball retaining ring; the motion guide rail passes through the front cover and is locked into a positioning hole on the steel ball retaining ring by a positioning screw.

4. The pre-embedded groove connection structure with automatic separation function according to claim 1, characterized in that, The piston rod end of the cylinder is fixedly connected to one end of the T-shaped tie rod module via a tie rod pin, and a cotter pin is used for positioning at the protruding end of the tie rod pin.

5. The pre-embedded groove connection structure with automatic separation function according to claim 1, characterized in that, It also includes a pneumatic control mechanism and a signal indicator device. The pneumatic control mechanism is connected to the cylinder through a pipe to control the cylinder's movement; the signal indicator device illuminates an indicator light when the cylinder moves.

6. The pre-embedded groove connection structure with automatic separation function according to claim 3, characterized in that, The motion guide rail is provided with a strip-shaped hole; a mounting pin passes through the strip-shaped hole, and a spring passes through the motion guide rail.

7. The pre-embedded groove connection structure with automatic separation function according to claim 3, characterized in that, The piston has a positioning groove on its upper surface that matches the motion guide rail, and the piston has a nut on its lower surface that matches the fixing screw. A second sealing ring is provided between the piston and the motion guide rail. Anti-collision pad mounting grooves are provided on the upper and lower surfaces of the piston, and anti-collision pads are placed in the anti-collision pad mounting grooves.

8. The pre-embedded groove connection structure with automatic separation function according to claim 3, characterized in that, The connecting rod includes a device connecting rod and a device separation module connecting rod; the device connecting rod and the device separation module connecting rod are movably connected.

9. The pre-embedded groove connection structure with automatic separation function according to claim 3, characterized in that, The steel ball retaining ring includes a first retaining ring and a second retaining ring; the first retaining ring and the second retaining ring cooperate, and a steel ball is installed between the first retaining ring and the second retaining ring; the steel ball cooperates with the motion guide rail, so that it rotates and moves up and down in a compound motion during air intake and exhaust; the second retaining ring is provided with a positioning hole, and the positioning screw cooperates with the positioning hole.

10. A pre-embedded groove connection structure with automatic separation function according to claim 3, characterized in that, A sealing ring mounting groove is provided on the piston side surface, and a third sealing ring is provided in the sealing ring mounting groove.

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