A portal and sliding door

By using a modular structure and sliding connection design, the problem of cumbersome disassembly and assembly of sliding doors and frames is solved, achieving convenient disassembly and assembly and cost reduction.

CN224565974UActive Publication Date: 2026-07-28SHANDONG PRINCETON METAL PROD CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANDONG PRINCETON METAL PROD CO LTD
Filing Date
2025-08-28
Publication Date
2026-07-28

AI Technical Summary

Technical Problem

The existing sliding door and door frame structure is complicated to disassemble and assemble, requires professional operation, and consumes a lot of manpower and time.

Method used

The modular structure design allows the gantry to be assembled by sliding connections via grooves and bolt fastening, and combines sliding mechanisms, guiding mechanisms, and limiting mechanisms to achieve convenient assembly and disassembly.

Benefits of technology

Ordinary users can assemble it themselves, reducing labor and time costs and improving assembly and disassembly efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a portal and sliding door relates to movable door technical field, the utility model provides a portal, including first section bar, two first section bars horizontal and parallel arrangement, the upper side wall and the lower side wall of first section bar all are equipped with first sliding slot, second section bar vertical arrangement between two first section bars, both ends of second section bar all are fixed with section bar board, and the section bar board is slid in the first sliding slot of corresponding side, and is fastened through bolt, the sliding door of the utility model includes ground rail, the bottom of first section bar of portal below is equipped with sliding mechanism, and sliding mechanism is slid on ground rail, and the fixed panel between two adjacent second section bars, and the guide mechanism is fixed in the both sides of ground rail, is used to the portal orientation, avoids the portal deflection, the portal and sliding door of the utility model are convenient to dismount, and the manpower and time cost in the process of dismounting are reduced.
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Description

Technical Field

[0001] This utility model relates to the field of movable door technology, and in particular to a door frame and a sliding door. Background Technology

[0002] Currently, many sliding doors and gantry frames adopt integral frame structures or complex connection methods. For example, the gantry of some semi-gantry cranes consists of a rigid integral structure with main beams, end beams, and legs. This structure is extremely cumbersome to disassemble and assemble, consuming a lot of manpower and time, and often requires professional personnel to disassemble and assemble it in the factory, making it inconvenient to operate.

[0003] Therefore, there is an urgent need to design a technical solution that is easy to assemble and disassemble. Utility Model Content

[0004] The purpose of this utility model is to provide a door frame and sliding door to solve the problems existing in the prior art, which facilitates disassembly and assembly and reduces the labor and time costs in the disassembly and assembly process.

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

[0006] This utility model provides a gantry, comprising:

[0007] The first profile, two first profiles are arranged horizontally and vertically parallel, and the upper and lower side walls of the first profiles are provided with first grooves;

[0008] The second profile is vertically arranged between the two first profiles. Profile plates are fixed at both the upper and lower ends of the second profile. The profile plates are slidably disposed in the first groove on the corresponding side and fastened by bolts.

[0009] Preferably, it further includes a filling plate and an end baffle. The filling plate is slidably disposed in a first groove at the top of the first profile located above. The first profile is hollow inside, and a positioning hole is provided on the inner sidewall of the end of the first profile. The end baffle is attached to the end of the first profile and is fixedly connected to the positioning hole by bolts. The inner sidewall of the end baffle can abut against the end of the filling plate and the end of the outermost profile plate, respectively.

[0010] This utility model also provides a sliding door, including:

[0011] The ground track is horizontally and fixedly installed on the ground.

[0012] As described above, the bottom of the first profile of the gantry is provided with a sliding mechanism, which is slidably connected to the ground rail; a panel is fixedly provided between two adjacent second profiles;

[0013] A guiding mechanism is fixedly installed on both sides of the ground rail to guide the gantry and prevent it from tilting.

[0014] Preferably, it further includes a drive mechanism, the drive mechanism including a drive seat disposed on one side of the ground rail, a drive motor disposed on the drive seat, a drive gear being drivenly connected to the output shaft of the drive motor, and a rack disposed on the side of the first profile located below near the drive mechanism, the drive gear meshing with the rack.

[0015] Preferably, the guiding mechanism includes gantry columns fixedly disposed on both sides of the ground rail, and a guide is provided on the inner side wall of the gantry column, and the gantry frame can be movably inserted into the guide.

[0016] Preferably, the guide includes a guide side plate, a guide cross plate, and guide wheels; the guide side plate is fixed to the inner wall of the gantry column, the guide cross plate is vertically connected to the guide side plate and arranged between the two inner walls of the gantry column, the guide cross plate has two strip holes, each of the strip holes is fixedly connected to a guide wheel by a fastener, the axis of the guide wheel is vertically arranged, and the first profile of the gantry at the top passes between the two guide wheels; the distance between the two guide wheels is adjustable.

[0017] Preferably, it further includes a limiting mechanism, which includes an upper limiting mechanism and a lower limiting mechanism, which are respectively fixed to both ends of the ground rail to limit the movement position of the gantry.

[0018] Preferably, the upper limit mechanism includes a gantry column fixedly disposed at one end of the ground rail. A limiter is provided on the inner side of the gantry column. The limiter includes a first limit plate, which is fixedly connected to one of the inner side walls of the gantry column. A second limit plate is fixedly disposed on the first limit plate. The second limit plate is vertically arranged between the two inner side walls of the gantry column. Two limit wheels are provided on the side of the second limit plate near the ground rail. A limit block is provided between the two limit wheels. One end of the upper part of the gantry can pass through the two limit wheels and abut against the limit block.

[0019] Preferably, the lower limiting mechanism includes a base plate fixedly disposed at one end of the ground rail, a vertical plate fixedly disposed on the base plate, a limiting block disposed at one end of the vertical plate near the ground rail, and the lower end of the gantry being able to abut against the limiting block.

[0020] Preferably, the panel includes a frame and strips, with multiple strips arranged in parallel vertically, and each end of the strip is fixedly inserted into the corresponding end of the frame. A partition block is provided on the inner side of the frame, and the partition block is located between two adjacent strips. The side of the frame away from the strips is attached to the side wall of the second profile and fixed with screws.

[0021] The present invention achieves the following technical advantages over the prior art:

[0022] The door frame of this utility model adopts a modular structure. The first and second profiles are slidably connected via a sliding groove and secured with bolts for easy assembly and disassembly. Due to the design of the first sliding groove, ordinary users can easily assemble the first and second profiles according to the groove structure, without the need for on-site guidance and operation from professionals, thus reducing labor and time costs. The sliding door's guide rails, the guide mechanism mounted on the gantry, and the limiting mechanism are all modular structures connected by bolts, facilitating disassembly, assembly, and transportation, reducing time costs during the assembly and disassembly process. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of a partial structure of a sliding door in one or more embodiments of the present invention;

[0025] Figure 2 This is a schematic diagram showing the arrangement of the sliding mechanism and the first profile in one or more embodiments of the present invention.

[0026] Figure 3 This is a schematic diagram of the upper limit mechanism in one or more embodiments of the present invention;

[0027] Figure 4 This is a schematic diagram of the sliding mechanism and the first profile after installation in one or more embodiments of the present invention;

[0028] Figure 5 This is a schematic diagram of a guide mechanism in one or more embodiments of the present utility model;

[0029] Figure 6 This is a schematic diagram of the sliding mechanism structure in one or more embodiments of the present utility model;

[0030] Figure 7 This is a schematic diagram of the pulley and ground track in one or more embodiments of the present utility model;

[0031] Figure 8 This is a partial schematic diagram of the gantry in one or more embodiments of the present invention;

[0032] Figure 9 This is a schematic diagram of the meshing of the drive gear and rack in one or more embodiments of the present invention;

[0033] Figure 10 This is a schematic diagram of a partial connection process of the gantry in one or more embodiments of the present invention;

[0034] Figure 11 This is a schematic diagram of the drive seat in one or more embodiments of the present invention;

[0035] Figure 12 This is a partially exploded view of the gantry in one or more embodiments of the present invention;

[0036] Figure 13 This is a schematic diagram of the toothed plate installation in one or more embodiments of the present utility model;

[0037] Figure 14 This is a schematic diagram of the panel in one or more embodiments of the present invention;

[0038] Figure 15 This is a schematic diagram of the end baffle of the gantry in one or more embodiments of the present invention;

[0039] Figure 16 This is a partial schematic diagram of the upper limit mechanism in one or more embodiments of the present invention;

[0040] Figure 17 This is a partial schematic diagram of the guide mechanism in one or more embodiments of the present invention;

[0041] Figure 18 This is a partial schematic diagram of the ground track in one or more embodiments of the present invention;

[0042] Figure 19 This is a schematic diagram of the lower limit mechanism in one or more embodiments of the present invention.

[0043] In the diagram: 1-First profile, 2-Second profile, 3-First chute, 4-Profile plate, 5-Cropping plate, 6-End baffle, 7-Ground rail, 8-Sliding mechanism, 9-Guide mechanism, 10-Drive seat, 11-Drive gear, 12-Gear plate, 13-Rack, 14-Gantry column, 15-Guide, 16-Guide side plate, 17-Guide cross plate, 18-Guide wheel, 19-Upper limit mechanism, 20-Lower limit mechanism, 21-First limit plate, 22-Second limit plate, 23-Limit wheel, 24-Limit block, 25-Strip, 26-Pulley. Detailed Implementation

[0044] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0045] The purpose of this utility model is to provide a door frame and sliding door to solve the problems existing in the prior art, which facilitates disassembly and assembly and reduces the labor and time costs in the disassembly and assembly process.

[0046] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0047] Currently, many sliding door frames adopt an integral frame structure or a complex connection method. This structure is extremely cumbersome to assemble and disassemble, consuming a lot of manpower and time, and often requires professional personnel to perform the disassembly and assembly in the factory, making it inconvenient to operate. To solve this problem, the first objective of this utility model is to provide a door frame, as shown in the attached figure. Figure 2 ~Attached Figure 19As shown, a frame structure is composed of a first profile 1 and a second profile 2. The two first profiles 1 are arranged horizontally and vertically in parallel. First grooves 3 are provided on both the upper and lower side walls of the first profiles 1. The second profile 2 is arranged vertically between the two first profiles 1. Profile plates 4 are fixed at both ends of the second profile 2. The profile plates 4 slide within the corresponding first grooves 3 and are secured with bolts. In this embodiment, three second profiles 2 are evenly distributed between the two first profiles 1. After the profile plates 4 at the ends of the second profiles 2 are fixed to the corresponding first grooves 3, a filling plate 5 and an end baffle 6 are designed in one embodiment to ensure a stable connection. The filling plate 5 slides within the first groove 3 at the top of the upper first profile 1, thereby covering the outer surface of the first profile 1 and making its outer surface smoother. The first sliding groove 3 is symmetrically opened on the upper and lower side walls of the first profile 1, so that the first profile 1 does not have a specific use position, making it easier to install. After installation, the filling plate 5 can be fixed at the uppermost first sliding groove 3. The first profile 1 is hollow inside, which reduces weight and facilitates transportation. The inner side wall of the end of the first profile 1 is provided with positioning holes. The end baffle 6 fits against the end of the first profile 1 and is fixedly connected to the positioning holes by bolts. The cross-sectional area of ​​the end baffle 6 is larger than the cross-sectional area of ​​the first profile 1. Therefore, the edge of the inner side wall of the end baffle 6 can abut against the end of the filling plate 5 and the end of the outermost profile plate 4, respectively, thereby limiting the position of the filling plate 5 and the profile plate 4, and making the overall frame smoother. The cut at the end of the profile is sealed inside, which will not cause scratches to personnel.

[0048] The second objective of this invention is to provide a sliding door, as shown in the attached document. Figure 1 ~Attached Figure 19As shown, the system includes a horizontally fixed ground rail 7. In this embodiment, the ground rail 7 is a one-piece molded structure, comprising an upwardly protruding track with an arc-shaped cross-section. Flange plates are symmetrically arranged on both sides of the track, and the flange plates are fixed to the ground by bolts. A sliding mechanism 8 is provided at the bottom of the first profile 1 below the gantry. In this embodiment, the sliding mechanism 8 includes a pulley 26. A concave annular groove is provided on the annular surface of the pulley 26. The pulley 26 slides and engages with the arc-shaped track through the groove, thereby positioning the pulley 26 and preventing slippage. During operation, the pulley derails, acting as a limit switch, ensuring that pulley 26 can only roll along the length of the ground rail 7. For ease of installation, in one embodiment, a wheel groove is provided at the bottom of the lowest first profile 1. The pulley 26 is rotatably connected to a wheel frame, which is fixed to the outer side of the bottom of the first profile 1 near the wheel groove by screws. The upper part of the pulley 26 is movably positioned within the wheel groove, thus achieving a stable installation of the pulley 26 and a stable positioning with the gantry. The lower part of the pulley 26 slides on the ground rail 7, enabling the gantry to move. A panel is fixed between two adjacent second profiles 2, forming a door structure. A guide mechanism 9 is fixed on both sides of the ground rail 7 to guide the gantry and prevent it from tilting.

[0049] The panel in this embodiment includes a frame and strips 25. Multiple strips 25 are arranged in parallel vertically, and the two ends of the strips 25 are fixedly inserted into the corresponding ends of the frame. The inner side of the frame is provided with partition blocks, which are located between two adjacent strips 25 to limit the position of the strips 25 and form a grid-like structure. The side of the frame away from the strips 25 is attached to the side wall of the second profile 2 and fixed with screws for easy disassembly and assembly.

[0050] In one embodiment, a drive mechanism is designed to realize the automatic reciprocating movement of the gantry. To achieve this function, the drive mechanism in this embodiment includes a drive seat 10 located on one side of the ground rail 7. The drive seat 10 is equipped with a drive motor. The output shaft of the drive motor is horizontally arranged and connected to a drive gear 11. The first profile 1 located below is equipped with a toothed plate 12 near the drive mechanism. The bottom of the toothed plate 12 is equipped with a rack 13. The drive gear 11 meshes with the rack 13. By controlling the drive motor, the drive gear 11 is made to rotate forward or backward, thereby causing the drive gear 11 to drive the rack 13 and the gantry fixed to the rack 13 to move reciprocally along the ground rail 7, realizing the sliding function of the gantry.

[0051] In one embodiment, the toothed plate 12 adopts a split structure. One end of the toothed plate 12 has a positioning protrusion, and the other end has a positioning groove. One side of the toothed plate 12 is fixed to the first profile 1 by a connecting bracket. Multiple toothed plates 12 are connected end to end in sequence. The positioning protrusion of the toothed plate 12 engages with the positioning groove of the adjacent toothed plate 12 to form a continuous toothed rack 13 structure, which is suitable for use with gantry frames of different lengths. For ease of installation, in one embodiment, a joint toothed plate 12 with a shorter length than the ordinary toothed plate 12 is also provided. The joint toothed plate 12 has a toothed rack 13 at the bottom and an extension at the top. The extension presses the joint toothed plate 12 downward between the toothed plate 12 and the limiting block 24 at the end of the first profile 1, so that the length of the toothed rack 13 is adapted to the length of the first profile 1 as much as possible.

[0052] In one embodiment, the guiding mechanism 9 includes gantry columns 14 fixedly disposed on both sides of the ground rail 7. Each gantry column 14 includes a first vertical rod and a second vertical rod symmetrically fixed on both sides of the ground rail 7. The tops of the first and second vertical rods are fixedly connected by a crossbeam. A guide 15 is provided on the inner wall of the gantry column 14, and the gantry frame can be movably inserted into the guide 15. The guide 15 guides the upper part of the gantry frame, preventing it from tipping over or tilting during sliding. Therefore, in this embodiment, the guide 15 includes a guide side plate 16, a guide horizontal plate 17, and guide wheels 18. The guide side plate 16 is fixed to the inner wall of the first or second vertical rod of the gantry column 14. The guide horizontal plate 17 is vertically connected to the guide side plate 16 and arranged between the two inner walls of the gantry column 14. The guide horizontal plate 17 is located on the upper part of the gantry frame. Two slotted holes are provided on the guide horizontal plate 17, and each slotted hole is fixedly connected to a guide wheel 18 by fasteners. The axis of the guide wheel 18 is vertical. The guide rollers are arranged vertically and located below the guide plate 17, so that the guide plate 17 does not obstruct the movement of the gantry. The first profile 1 of the gantry at the top passes between the two guide rollers 18 and rolls in contact with the two guide rollers 18. The two guide rollers 18 guide and limit the upper part of the gantry. In order to accommodate gantry of different thicknesses, in one embodiment, the distance between the two guide rollers 18 can be adjusted by fixing the axle of the guide roller 18 to different positions of the slot. The guide roller 18 is movably connected to the corresponding axle through the bearing, so fixing the axle will not affect the rotation of the guide roller 18.

[0053] Since the length of the ground rail 7 is limited, in order to prevent the gantry from detaching from the ground rail 7 during the sliding process, a limiting mechanism is designed in one embodiment. The limiting mechanism includes an upper limiting mechanism 19 and a lower limiting mechanism 20. The upper limiting mechanism 19 and the lower limiting mechanism 20 are respectively fixed to both ends of the ground rail 7, and respectively limit the upper part and the lower part of the gantry, thereby limiting the movement position of the gantry and preventing the gantry from detaching from the ground rail 7.

[0054] In one embodiment, the upper limit mechanism 19 includes a gantry column 14 fixedly disposed at one end of the ground rail 7. The structure of the gantry column 14 is the same as that of the gantry column 14 connected to the sliding mechanism 8, except that the placement position is different. A limiter is provided on the inner side of the gantry column 14 located at one end of the ground rail 7. The limiter includes a first limit plate 21, which is fixedly connected to one of the inner sidewalls of the gantry column 14. A second limit plate 22 is fixedly disposed on the first limit plate 21. The second limit plate 22 is vertically... The second limiting plate 22 is positioned between the two inner walls of the gantry column 14. Two limiting wheels 23 are mounted on the side of the second limiting plate 22 near the ground rail 7 via a limiting frame. A limiting block 24 is positioned between the two limiting wheels 23 and is fixed to the inner side of the second limiting plate 22. When the gantry slides to one end near the upper limiting mechanism 19, both sides of the upper end of the gantry can roll into contact with the two limiting wheels 23, pass through the two limiting wheels 23, and abut against the limiting block 24, thereby limiting the gantry. The lower limiting mechanism 20 of this embodiment includes a base plate fixed to the other end of the ground rail 7. A vertical plate is fixedly mounted on the base plate, and a limiting block 24 is mounted on one end of the vertical plate near the ground rail 7. When the gantry slides to the other end, the lower end of the gantry can abut against the limiting block 24, thereby limiting the gantry.

[0055] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A gantry frame, characterized in that: include: The first profile, two first profiles are arranged horizontally and vertically parallel, and the upper and lower side walls of the first profiles are provided with first grooves; The second profile is vertically arranged between the two first profiles. Profile plates are fixed at both the upper and lower ends of the second profile. The profile plates are slidably disposed in the first groove on the corresponding side and fastened by bolts.

2. The gantry according to claim 1, characterized in that: It also includes a filling plate and an end baffle. The filling plate is slidably disposed in a first groove at the top of the first profile located above. The first profile is hollow inside, and a positioning hole is provided on the inner side wall of the end of the first profile. The end baffle is attached to the end of the first profile and is fixedly connected to the positioning hole by bolts. The inner side wall of the end baffle can abut against the end of the filling plate and the end of the outermost profile plate, respectively.

3. A sliding door, characterized in that: include: The ground track is horizontally and fixedly installed on the ground. The gantry according to any one of claims 1 to 2, wherein the bottom of the first profile located below the gantry is provided with a sliding mechanism, the sliding mechanism being slidably connected to the ground rail; a panel is fixedly provided between two adjacent second profiles; A guiding mechanism is fixedly installed on both sides of the ground rail to guide the gantry and prevent it from tilting.

4. The sliding door according to claim 3, characterized in that: It also includes a drive mechanism, which includes a drive seat located on one side of the ground rail, a drive motor mounted on the drive seat, a drive gear connected to the output shaft of the drive motor, and a rack located on the side of the first profile below near the drive mechanism, with the drive gear meshing with the rack.

5. The sliding door according to claim 3, characterized in that: The guiding mechanism includes gantry columns fixed on both sides of the ground rail, and a guide is provided on the inner side wall of the gantry column. The gantry frame can be movably inserted into the guide.

6. The sliding door according to claim 5, characterized in that: The guide includes a guide side plate, a guide cross plate, and guide wheels. The guide side plate is fixed to the inner wall of the gantry column. The guide cross plate is vertically connected to the guide side plate and arranged between the two inner walls of the gantry column. The guide cross plate has two strip holes, and each strip hole is fixedly connected to a guide wheel by a fastener. The axis of the guide wheel is vertically arranged. The first profile of the gantry at the top passes between the two guide wheels. The distance between the two guide wheels is adjustable.

7. The sliding door according to claim 3, characterized in that: It also includes a limiting mechanism, which comprises an upper limiting mechanism and a lower limiting mechanism. The upper limiting mechanism and the lower limiting mechanism are respectively fixed to both ends of the ground rail to limit the movement position of the gantry.

8. The sliding door according to claim 7, characterized in that: The upper limit mechanism includes a gantry column fixedly installed at one end of the ground rail. A limiter is provided on the inner side of the gantry column. The limiter includes a first limit plate, which is fixedly connected to one of the inner side walls of the gantry column. A second limit plate is fixedly installed on the first limit plate. The second limit plate is vertically arranged between the two inner side walls of the gantry column. Two limit wheels are provided on the side of the second limit plate near the ground rail. A limit block is provided between the two limit wheels. One end of the upper part of the gantry can pass through the two limit wheels and abut against the limit block.

9. The sliding door according to claim 7, characterized in that: The lower limit mechanism includes a base plate fixedly disposed at one end of the ground rail, a vertical plate fixedly disposed on the base plate, a limit block disposed at one end of the vertical plate near the ground rail, and the lower end of the gantry can abut against the limit block.

10. The sliding door according to claim 3, characterized in that: The panel includes a frame and strips, with multiple strips arranged in parallel vertically, and each end of the strip is fixedly inserted into the corresponding end of the frame. A partition block is provided on the inner side of the frame, and the partition block is located between two adjacent strips. The side of the frame away from the strips is attached to the side wall of the second profile and fixed with screws.