Lining pre-buried sliding groove structure based on sliding sleeve and construction method thereof

Abstract

The present application relates to a kind of lining embedded slide groove structure based on sliding sleeve and its construction method.There is the problem of concrete pouring and vibrating to cause channel inclination or local displacement by pin mode fixed channel at present.The present application includes upper sleeve, lower sleeve, force transmission rod, channel-shaped notch positioner and channel;Lower sleeve is located in upper sleeve and can slide in upper sleeve, and the sliding range is limited by clamping ear;Force transmission rod is located in lower sleeve, and the bottom plate of lower sleeve is provided with lower sleeve T-shaped notch at the position corresponding to force transmission rod;Channel-shaped notch positioner top is located at the bottom of lower sleeve and is clamped in lower sleeve T-shaped notch, and channel is connected to the bottom of channel-shaped notch positioner.The present application is located in lining structure inside as a whole, and the contact pressure of channel and formwork surface is realized by the compression of high-performance spring, can guarantee that channel and formwork surface are closely combined, realize the relative stability of sliding sleeve and lower slide groove when reinforcement cage appears displacement in concrete vibrating process, realize channel high-precision embedding.

Description

Technical Field

[0001] This invention relates to the field of tunnel engineering technology, specifically to a lining pre-embedded groove structure based on a sliding sleeve and its construction method. Background Technology

[0002] Currently, the widespread method for fixing pre-embedded channels in lining structures is based on using formwork and setting pins. The channels are typically fixed to the secondary lining formwork using pins. However, during concrete pouring and vibration, the channels often tilt or shift locally, sometimes even detaching from the formwork surface and becoming buried in concrete. After the lining is demolded, the pre-embedded channel position is often insufficient for equipment suspension, potentially requiring the installation of external channels or post-installed anchor bolts. This approach fails to meet the needs of actual projects in terms of investment control, schedule assurance, and lining quality control.

[0003] Pre-embedded chutes can maximize equipment installation efficiency and lining quality, and have been widely used in underground engineering and civil construction in recent years. However, a series of problems caused by inadequate chute pre-embedding have attracted widespread attention in the industry. Therefore, there is an urgent need to develop new structures and measures that can ensure the accuracy of chute pre-embedding and meet the requirements of quick and simple on-site chute fixing processes to overcome the problems of existing pre-embedding methods. Summary of the Invention

[0004] The purpose of this invention is to provide a lining pre-embedded groove structure based on a sliding sleeve and its construction method, so as to solve the problem of groove tilting or local displacement caused by concrete pouring and vibration when fixing the groove by pins.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A lining pre-embedded groove structure based on a sliding sleeve, the structure being pre-embedded within the lining, includes an upper sleeve, a lower sleeve, a force transmission rod, an I-shaped groove positioning device, and a groove.

[0007] The upper sleeve has a top plate and a cylinder wall, and the lower sleeve has a bottom plate and a cylinder wall. The lower sleeve is located inside the upper sleeve and can slide inside the upper sleeve. The sliding range is limited by the clasp.

[0008] The force transmission rod is located inside the lower sleeve and is vertically arranged. The bottom plate of the lower sleeve is provided with a lower sleeve T-shaped groove corresponding to the position of the force transmission rod. The top of the I-shaped groove holder is located at the bottom of the lower sleeve and is locked in the lower sleeve T-shaped groove. The groove is connected to the bottom of the I-shaped groove holder.

[0009] Furthermore, the top surface of the top plate of the upper sleeve is connected to a collar by a collar support bar, and the distribution bars in the lining are inserted into the collar.

[0010] Furthermore, the lower part of the inner wall of the upper sleeve is provided with two layers of the aforementioned catches, which are inner catches;

[0011] The upper part of the outer wall of the lower sleeve is provided with two layers of the aforementioned catches, which are the outer catches;

[0012] The outer clip is located above the inner clip, and the lower outer clip moves up and down between the upper and lower inner clips, causing the lower sleeve to move up and down inside the upper sleeve.

[0013] Furthermore, a spring is provided between the top of the force transmission rod and the top plate of the upper sleeve.

[0014] Furthermore, the bottom of the force transmission rod is provided with a force transmission rod mounting groove, and the top of the I-shaped slot holder is located inside the lower sleeve and inside the force transmission rod mounting groove;

[0015] The lower sleeve T-slot is composed of the lower sleeve straight slot at the bottom of the lower sleeve and the force transmission rod mounting slot.

[0016] Furthermore, the I-shaped slot positioning device includes a clamping plate, a connecting rod, and a jaw-shaped slot body;

[0017] The clamping plate is located in the force transmission rod mounting groove, and the connecting rod and the jaw-shaped groove are located at the bottom of the lower sleeve.

[0018] Furthermore, the connecting rod is provided with external threads and fitted with a hexagonal nut.

[0019] Furthermore, the width of the force transmission rod mounting groove is greater than the length of the clamping plate;

[0020] The length of the card plate is greater than the width of the slot of the lower sleeve;

[0021] The diameter of the connecting rod is smaller than the width of the slot in the lower sleeve.

[0022] Furthermore, a T-shaped anchor leg is provided at the top of the channel, and the anchor leg is located in the jaw-shaped channel body.

[0023] On the other hand, a construction method for a lining pre-embedded groove structure based on a sliding sleeve as described above is provided, the method comprising:

[0024] An upper sleeve with an inner clamp and a lower sleeve with an outer clamp are welded together using steel plates, with one side of the upper sleeve open.

[0025] The spring is fixed to the top of the force transmission rod. After the spring is compressed, it is placed in the lower sleeve together with the force transmission rod. Then the lower sleeve is inserted from the open part of the upper sleeve to form a sliding sleeve, and the upper sleeve is closed.

[0026] A collar is fixed outside the distribution reinforcement, and the collar is welded to the top of the sliding sleeve through the collar support reinforcement.

[0027] Insert the clamping plate of the I-shaped slot holder into the lower sleeve and rotate it 90°, then fix it by tightening the hexagonal nut on the connecting rod;

[0028] Insert the anchor leg at the top of the channel into the jaw-shaped groove of the I-shaped slot holder;

[0029] When the template is erected, the channel is subjected to the radial thrust of the template, which causes the spring in the sliding sleeve to be compressed. The spring reaction force ensures that the channel is tightly attached to the template surface. Then, concrete is poured to embed the entire lining pre-embedded sliding channel structure based on the sliding sleeve into the lining.

[0030] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0031] This invention proposes a lining pre-embedded chute structure based on a sliding sleeve, which is pre-embedded entirely inside the lining structure. The chute does not require drilling holes in the secondary lining template for fixing with pins. The contact pressure between the chute and the template surface is provided by the spring compression reaction force, which can completely ensure that there is no mortar leakage between the chute and the inner surface of the lining structure. This achieves relative stability between the sliding sleeve and the chute below when the reinforcing cage is displaced during concrete vibration, thereby achieving high-precision pre-embedding of the chute and effectively avoiding chute tilting or local displacement.

[0032] Furthermore, this invention proposes a lining pre-embedded groove structure based on a sliding sleeve, which is effectively compressed radially and can slide freely longitudinally along the lining reinforcement. The upper collar is connected to the distribution reinforcement of the lining structure, allowing the collar to slide freely longitudinally along the distribution reinforcement. The lower I-shaped groove holder is connected to the groove anchor leg for limiting, achieving a fixed connection between the groove and the lower sleeve. The combined effect of the inner and outer lugs, high-performance compression springs, and force transmission rods enables compression sliding between the upper and lower sleeves, thereby achieving radial compression of the lower groove along the lining structure. In its natural state, the internal high-performance compression spring is under a certain compression, causing the upper and lower sleeves to be in a state of maximum tension. At this point, the maximum height of the entire device is approximately 2-3 cm longer than the distance from the distribution reinforcement to the formwork used for lining structure pouring, ensuring that the internal high-performance compression spring continues to compress after the formwork is installed, achieving tight contact between the lower pre-embedded groove and the formwork. Attached Figure Description

[0033] 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 some embodiments of the present invention. For those skilled in the art, other embodiments can be obtained from these drawings without creative effort.

[0034] Figure 1 This is a structural diagram of the present invention.

[0035] Figure 2 This is a top view of the connection between the upper sleeve and the distribution reinforcement.

[0036] Figure 3 This is a bottom view of the straight groove of the lower sleeve.

[0037] Figure 4 This is a structural diagram of an I-shaped slotted clamp.

[0038] Figure 5 This is a schematic diagram of the present invention embedded in the lining structure.

[0039] The diagram is labeled as follows:

[0040] 1-Upper sleeve, 2-Lower sleeve, 3-Inner clamp, 4-Outer clamp, 5-Spring, 6-Force transmission rod, 7-Distribution rib, 8-Collar, 9-Collar support rib, 10-Welding line, 11-Lower sleeve slot, 12-I-shaped slot holder, 13-Channel, 14-Anchor leg, 15-Hexagonal nut, 16-Washer;

[0041] 61 - Force transmission rod mounting slot;

[0042] 121-Clamping plate, 122-Connecting rod, 123-Jaw-shaped groove. Detailed Implementation

[0043] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0044] In the description of this patent, it should be understood that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "longitudinal", "lateral", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this patent.

[0045] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "setting," etc., should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0046] In a specific implementation, Figure 1 The direction of the centrally distributed reinforcement bars is defined as the longitudinal direction of the tunnel (or structure), and the direction perpendicular to it is defined as the transverse direction. The longitudinal and transverse directions in other attached figures are the same as... Figure 1 To be consistent.

[0047] This invention provides a lining pre-embedded groove structure based on a sliding sleeve, used for the installation of equipment such as cables, pipelines, evacuation platforms, and contact wires in tunnel engineering. Figure 5 All components of the structure are embedded in the lining, with the bottom flush with the lining surface.

[0048] like Figure 1 The structure includes a sliding sleeve, the top of which is connected to the distribution reinforcement 7 inside the lining, a spring 5 and a force transmission rod 6 are provided inside the sliding sleeve, and the bottom of the sliding sleeve is connected to the I-shaped slot positioning device 12 and the channel 13.

[0049] The sliding sleeve includes an upper sleeve 1 and a lower sleeve 2. The upper sleeve 1 has a top plate and a wall, while the lower sleeve 2 has a bottom plate and a wall; both are rectangular sleeves. The lower sleeve 2 is located inside the upper sleeve 1 and can move up and down along it, with the range of movement limited by catches. The lower inner wall of the upper sleeve 1 has two layers of catches, called inner catches 3. The upper outer wall of the lower sleeve 2 has two layers of catches, called outer catches 4. The outer catches 4 are located above the inner catches 3. The lower outer catches 4 move up and down between the two layers of inner catches 3, allowing the lower sleeve 2 to move up and down within the upper sleeve 1. The inner catches 3 and outer catches 4 are approximately the same size. These four layers of catches restrict the relative range of motion between the two sleeves. The maximum vertical sliding distance is the distance between the two layers of inner catches 3, and the change in the vertical length of the sliding sleeve corresponds to this. The sum of the widths of the lower sleeve 2 and the outer clamp 4 is slightly smaller than the net width of the upper sleeve 1 (the difference is generally controlled at 2-3 mm), ensuring both vertical freedom of movement between the upper and lower sleeves and effective horizontal engagement. The relative sliding distance between the inner and outer clamps is approximately 1 / 3 to 1 / 2 of the height of the upper sleeve 1. The inner clamp 3 and outer clamp 4 are only provided on the left and right side walls of the sleeve. The thickness of the sliding sleeve, inner and outer clamps, etc., is not less than 5 mm.

[0050] like Figure 2 The top surface of the upper sleeve 1 is connected to a collar 8 via collar support bars 9. The reinforcing bars of the lining structure, i.e., the distribution bars 7 within the lining, are encased in the collar 8. The collar 8 consists of two semi-circular tubes, clamped on the outside of the distribution bars 7 and welded together. The inner diameter of the collar 8 is slightly larger than the outer diameter of the distribution bars 7, allowing the collar 8 to slide on the distribution bars 7. Two collar support bars 9 can be installed on each side of each collar 8. The two ends of the collar support bars 9 are firmly welded to the collar 8 and the upper sleeve 1, respectively. The axial angle between the collar support bars 9 and the horizontal surface of the top surface of the upper sleeve 1 is approximately 60°. The wall thickness of the collar 8 can be 6-8mm, and the inner diameter can be 1-2cm larger than that of the distribution bars 7. The collar support bars 9 welded on both sides of the collar 8 should be ensured to be welded to the waist of the collar 8 after the ring is formed. The diameter of the collar support bars 9 should be no less than the main reinforcing bars of the tunnel lining, generally 25cm.

[0051] The force transmission rod 6 is I-shaped, located vertically inside the lower sleeve 2. A spring 5 is installed between the top of the force transmission rod 6 and the top plate of the upper sleeve 1. The spring 5 is in a compressed state and is a high-performance spring. The vertical length of the sliding sleeve can vary. During this process, due to the spring 5, the upper sleeve 1 and the lower sleeve 2 are continuously subjected to upward and downward pressure, respectively. In its natural state, the sum of the length of the spring 5 and the height of the force transmission rod 6 should be at least 2 cm greater than the maximum vertical clearance height inside the sliding sleeve. After the spring 5 is assembled into the sliding sleeve, it can exert a certain pressure on the force transmission rod 6, ensuring that the spring 5 is effectively compressed in the initial state and corresponds to the maximum height of the sliding sleeve.

[0052] Under the combined action of the upper and lower sleeve clips and the built-in spring, the upper and lower sleeves can be compressed vertically to a certain extent, applying a certain spring pressure to the pre-embedded groove below, ensuring that the groove 13 is in close contact with the formwork for pouring concrete for the lining structure.

[0053] like Figure 4 The I-shaped slot positioning device 12 includes a clamping plate 121, a connecting rod 122, and a jaw-shaped slot 123. The clamping plate 121 is horizontally positioned and located inside the lower sleeve 2, the connecting rod 122 is vertically positioned, and the jaw-shaped slot 123 opens downwards. A lower sleeve T-shaped slot is provided on the bottom plate of the lower sleeve 2 corresponding to the position of the force transmission rod 6, such as... Figure 3 The cross-section of the lower sleeve T-slot is T-shaped. The bottom of the force transmission rod 6 is provided with a force transmission rod mounting groove 61, and the bottom surface of the lower sleeve 2 is provided with a lower sleeve straight groove 11. The force transmission rod mounting groove 61 and the lower sleeve straight groove 11 form the lower sleeve T-slot. The clamping plate 121 is inserted into the lower sleeve T-slot along the long side of the lower sleeve straight groove 11, and then rotated 90° and slid longitudinally along the lower sleeve T-slot to the desired position. The connecting rod 122 is provided with external threads and is fitted with a hexagonal nut 15. If necessary, a washer 16 can be fitted to the hexagonal nut 15. The I-shaped groove clamping device 12 is fixed to the bottom of the lower sleeve 2 by tightening the hexagonal nut 15. The width of the force transmission rod mounting groove 61 is greater than the length of the clamping plate 121 (the longitudinal length before rotation), and the diameter of the connecting rod 122 is less than the width of the straight groove 11 of the lower sleeve. The clamping plate 121 can be suspended at the bottom of the lower sleeve 2.

[0054] like Figure 1 The top of the channel 13 is provided with a T-shaped anchor leg 14, the longitudinal dimension of which is generally 1-2cm. The anchor leg 14 is located in the jaw-shaped channel 123 to effectively clamp the channel 13. When two or more channels 13 are provided, they are connected by flat steel to form a group of channels.

[0055] The upper and lower sleeves, inner and outer lugs, force transmission rod 6, I-shaped slot positioning device 12, collar 8, etc. can all be made of Q235 or Q345 steel.

[0056] The above-mentioned construction method for the lining pre-embedded sliding groove structure based on sliding sleeve specifically includes the following steps:

[0057] S1: An upper sleeve 1 with an inner clamping lug 3 and a lower sleeve 2 with an outer clamping lug 4 are welded together using steel plates. One side of the upper sleeve 1 is open, specifically:

[0058] Based on the required length and mass of the fixed channel 13, the maximum load is estimated, and the upper and lower sleeve schemes are designed accordingly (the wall thickness can be considered as 5mm, and the length, width, and height can be considered as 5cm, 5cm, and 10cm, respectively). Then, according to the structural characteristics of the "F-type clamp" sleeve, five steel plates are welded to form the lower sleeve 2 with an open top. Then, external clamps 4 are welded to the top, middle, and both outer sides of the sleeve. The external clamps 4 are only set on the left and right side walls of the lower sleeve 2. Four steel plates are welded to form the upper sleeve 2 with an open side and bottom. Then, internal clamps 3 are welded to the bottom, middle, and both inner sides of the sleeve. The internal clamps 3 are only set on the left and right side walls of the upper sleeve 1.

[0059] S2: Fix spring 5 to the top of force transmission rod 6, compress spring 5 and place it together with force transmission rod 6 inside lower sleeve 2, then insert upper sleeve 1 and lower sleeve 2 to form a sliding sleeve, and close the open part on one side of upper sleeve 1 with a steel plate, specifically:

[0060] S201: A circular groove is pre-reserved at the center of the bottom surface of the top plate of the upper sleeve 1 to provide a fixing condition for the spring 5. The bottom of the lower sleeve 2 is made with a straight opening (with a sealing strip), and the bottom of the force transmission rod 6 is correspondingly grooved, together forming a T-shaped groove on the lower sleeve.

[0061] S202: Fix the spring 5 to the top of the force transmission rod 6, and then compress the spring 5 to a certain extent (≥2cm). Place the spring 5 and the force transmission rod 6 together in the middle position inside the sleeve. Under natural conditions, the compression of the spring 5 is about 1 / 5 of the maximum compression, ensuring effective contact between the inner and outer clips.

[0062] S203: Connect the upper sleeve 1 and the lower sleeve 2 to form a sliding sleeve. Seal the opening on one side of the upper sleeve 1 with a steel plate by welding. This completes the fabrication of the compression sleeve.

[0063] S3: Fix the collar 8 outside the distribution rib 7, and weld the collar 8 to the top of the sliding sleeve through the collar support rib 9, specifically:

[0064] S301: Based on the pre-embedded position of the channel 13, use two semi-circular sleeves to cover the corresponding distribution ribs 7, and then weld the upper and lower joints of the collar 8 formed by the two semi-circular sleeves.

[0065] S302: Weld the top of the already installed sliding sleeve to both sides of the collar 8 with four collar support ribs 9. The collar support ribs 9 must be welded to the waist of both sides of the collar 8. The welding points must be evenly distributed in the middle of the top of the upper sleeve 1. The collar 8 can slide freely on the distribution ribs (7).

[0066] S4: Insert the clamping plate 121 of the I-shaped slot holder 12 into the slot 11 of the lower sleeve and rotate it 90°. Secure it by tightening the hexagonal nut 15 on the outside of the connecting rod 122. Specifically:

[0067] Insert the top of the I-shaped slot holder 12 with hexagonal nut 15, i.e. the retaining plate 121, along the direction of the I-shaped slot 11 of the lower sleeve, and then rotate it 90°. Utilizing the structural feature of the T-shaped slot being larger inside and smaller outside, the retaining plate 121 can be fixed. After moving it to a specific position, use the lower hexagonal nut 15 to fix the I-shaped slot holder 12. Finally, seal the remaining parts of the I-shaped slot 11 of the lower sleeve with a sealing strip.

[0068] S5: Insert the anchor leg 14 at the top of the channel 13 into the jaw-shaped groove 123 of the I-shaped groove holder 12, and secure it with tie wire as needed.

[0069] Each channel 13 is connected to the sliding sleeve by at least two anchor legs 14. In the longitudinal direction of the tunnel, two or more channels 13 can be connected by welding steel bars to form a channel group as needed to ensure that there is no relative displacement between adjacent channels 13 during the pouring of the lining structure.

[0070] S6: According to the concrete pouring requirements of the lining structure, the formwork is erected, and the channel is appropriately compressed along the radial direction of the tunnel. The compression displacement is generally not less than 2cm. The bottom channel 13 of the sliding sleeve is tightly attached to the surface of the formwork. During the concrete pouring and vibration process, it can meet the requirement of tight compaction between the channel 13 below the sleeve and the formwork for concrete pouring. All the lining pre-embedded sliding channel structures based on the sliding sleeve are pre-embedded in the lining.

[0071] This invention is based on the concept of "effective radial compression and free longitudinal sliding." It effectively connects the upper lining reinforcement and the lower pre-embedded sliding groove 13 through a collar 8, upper and lower sleeves, and an I-shaped groove positioning device 12. The upper and lower sleeves are equipped with lugs, compression springs, and I-shaped force transmission rods, allowing free sliding along the inside of the sleeves. After the lower groove is connected via the I-shaped groove positioning device, in its natural state, the bottom of the groove extends at least 2cm beyond the inner surface of the lining. The groove 13 is then pressed tightly against the template surface by the concrete pouring formwork and the compression springs inside the sleeves. Simultaneously, because the inner diameter of the collar 8 is slightly larger than the diameter of the lining distribution reinforcement, the entire system can slide appropriately along the direction of the lining distribution reinforcement. This ensures that even if relative displacement occurs between the reinforcement cage and the groove during the lining casting process, the positions of the preceding and following pre-embedded sliding grooves remain largely unaffected, achieving high-precision pre-embedding of the grooves during the lining pouring stage.

[0072] In addition, the present invention can meet the actual needs of two or more sets of fixed chutes moving appropriately in the longitudinal direction of the tunnel (mainly considering the displacement that may be caused by concrete vibration), and avoids the template opening required for conventional channel fixing, thus achieving multiple benefits.

[0073] This invention represents a fundamental improvement over existing methods that rely on setting pins to fix sliding grooves on template surfaces. It enhances the safety and reliability of pre-embedded sliding grooves in lining structures and the installation of equipment and facilities, resulting in significant economic and social benefits. Furthermore, the process is simple and easy to implement, providing a novel approach to ensuring high-precision pre-embedding of sliding grooves in lining structures. It has broad application prospects in urban rail transit, railways, highways, and civil engineering projects.

[0074] The above examples illustrate the present invention only to aid in understanding it and are not intended to limit the scope of the invention. Those skilled in the art can make various simple deductions, modifications, or substitutions based on the principles of this invention.

Claims

1. A lining pre-embedded sliding groove structure based on a sliding sleeve, characterized in that: The structure is embedded in the lining and includes an upper sleeve (1), a lower sleeve (2), a force transmission rod (6), an I-shaped slot holder (12), and a channel (13). The upper sleeve (1) has a top plate and a cylinder wall, and the lower sleeve (2) has a bottom plate and a cylinder wall. The lower sleeve (2) is located inside the upper sleeve (1) and can slide inside the upper sleeve (1). The sliding range is limited by the clasp. The force transmission rod (6) is located inside the lower sleeve (2) and is vertically arranged. The bottom plate of the lower sleeve (2) is provided with a lower sleeve T-shaped groove corresponding to the position of the force transmission rod (6). The top of the I-shaped groove holder (12) is located at the bottom of the lower sleeve (2) and is locked in the lower sleeve T-shaped groove. The channel (13) is connected to the bottom of the I-shaped groove holder (12). A spring (5) is provided between the top of the force transmission rod (6) and the top plate of the upper sleeve (1). The bottom of the force transmission rod (6) is provided with a force transmission rod mounting groove (61), and the top of the I-shaped slot holder (12) is located inside the lower sleeve (2) and inside the force transmission rod mounting groove (61). The I-shaped slot holder (12) includes a clamping plate (121), a connecting rod (122), and a jaw-shaped groove (123); the clamping plate (121) is located in the force transmission rod mounting groove (61), and the connecting rod (122) and the jaw-shaped groove (123) are located at the bottom of the lower sleeve (2); The lower sleeve T-slot is composed of the lower sleeve I-shaped slot (11) provided at the bottom of the lower sleeve (2) and the force transmission rod mounting slot (61). The clamping plate (121) of the I-shaped slot clamp (12) is inserted into the lower sleeve (2) through the lower sleeve I-shaped slot (11) and rotated 90°. It is then fixed by screwing the hexagonal nut (15) on the connecting rod (122). The top surface of the top plate of the upper sleeve (1) is connected to a collar (8) by a collar support bar (9), and the distribution bar (7) in the lining is inserted into the collar (8).

2. The lining pre-embedded sliding groove structure based on a sliding sleeve according to claim 1, characterized in that: The lower part of the inner wall of the upper sleeve (1) is provided with two layers of the above-mentioned catches, which are inner catches (3). The upper part of the outer wall of the lower sleeve (2) is provided with two layers of the above-mentioned catches, which are the outer catches (4). The outer clip (4) is located above the inner clip (3), and the lower outer clip (4) moves up and down between the upper and lower inner clips (3), causing the lower sleeve (2) to move up and down inside the upper sleeve (1).

3. The lining pre-embedded sliding groove structure based on a sliding sleeve according to claim 2, characterized in that: The connecting rod (122) is provided with external threads and fitted with a hexagonal nut (15).

4. The lining pre-embedded sliding groove structure based on a sliding sleeve according to claim 3, characterized in that: The width of the force transmission rod mounting groove (61) is greater than the length of the clamping plate (121); The length of the card plate (121) is greater than the width of the slot (11) of the lower sleeve; The diameter of the connecting rod (122) is smaller than the width of the slot (11) of the lower sleeve.

5. The lining pre-embedded sliding groove structure based on a sliding sleeve according to claim 4, characterized in that: The top of the channel (13) is provided with a T-shaped anchor leg (14), which is located inside the jaw-shaped channel (123).

6. The construction method of the lining pre-embedded sliding groove structure based on the sliding sleeve as described in claim 5, characterized in that: The method includes: The upper sleeve (1) with an inner clamp (3) and the lower sleeve (2) with an outer clamp (4) are welded together using steel plates, with one side of the upper sleeve (1) open. The spring (5) is fixed to the top of the force transmission rod (6). After the spring (5) is compressed, it is placed in the lower sleeve (2) together with the force transmission rod (6). Then the lower sleeve (2) is inserted from the open part of the upper sleeve (1) to form a sliding sleeve, and the upper sleeve (1) is closed. A collar (8) is fixed outside the distribution rib (7), and the collar (8) is welded to the top of the sliding sleeve through the collar support rib (9); Insert the clamping plate (121) of the I-shaped slot clamp (12) into the lower sleeve (2) and rotate it 90°, and fix it by tightening the hexagonal nut (15) on the connecting rod (122); Insert the anchor leg (14) at the top of the channel (13) into the jaw-shaped groove (123) of the I-shaped slot holder (12). When the template is erected, the channel (13) is subjected to the radial thrust of the template, which causes the spring (5) inside the sliding sleeve to be compressed. The reaction force of the spring (5) ensures that the channel (13) fits tightly with the template surface. Then, concrete is poured to embed the lining pre-embedded sliding groove structure based on the sliding sleeve into the lining.

Images