Gauge for sliding door
By designing a sliding door inspection fixture with door clamping, locking, and adjustment auxiliary mechanisms, the problem of clamping diverse door specifications was solved, achieving efficient and accurate door inspection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING LIJU PRECISION FORGING CO LTD
- Filing Date
- 2025-06-10
- Publication Date
- 2026-05-15
AI Technical Summary
Existing sliding door fixtures are difficult to adapt to diverse door specifications, and the clamping device is inconvenient to adjust, resulting in low production efficiency and waste of resources.
A sliding door fixture was designed, comprising a door clamping mechanism, a clamping and locking mechanism, and an adjustment auxiliary mechanism. The movement of the moving plate and clamping rod is controlled by a hydraulic cylinder. Combined with a locking tube, locking rod, and threaded connection, it achieves flexible clamping and precise positioning. A spring rod and a rotating sleeve are added to enhance stability.
It achieves stable clamping of doors of different sizes and shapes, improves detection accuracy and production efficiency, reduces resource waste, and lowers the difficulty of operation.
Smart Images

Figure CN224239355U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of door inspection technology, and more specifically, to a sliding door inspection tool. Background Technology
[0002] Existing sliding door inspection fixtures exhibit significant limitations when faced with the increasingly diverse door specifications on the market. Sliding doors, as a common building component, vary widely in size, material, and shape. However, traditional inspection fixtures often employ fixed or limited-adjustment clamping devices, making it difficult to meet this diverse needs.
[0003] Specifically, common inspection tools use fixed-size clamps or jigs that can only accommodate door bodies of specific sizes. If a door body exceeds the design specifications, the entire set of inspection tools must be replaced or cumbersome modifications must be made. This "one tool, one type" design philosophy forces manufacturers to equip themselves with multiple sets of inspection tools, not only occupying a large amount of space but also wasting production resources. This is especially true for small and medium-sized door and window manufacturers, for whom the economic burden of purchasing multiple sets of high-precision inspection tools is particularly heavy.
[0004] First, most traditional inspection fixtures use bolt-fixed clamping point adjustment, which requires the use of wrenches or other tools for tedious loosening-adjusting-tightening operations. This adjustment method is not only time-consuming and labor-intensive, but also requires operators to have certain skills and experience. On high-frequency production lines, this inefficient adjustment method becomes a bottleneck affecting production efficiency, and it is easy to cause the door to be damaged due to improper operation, such as insecure clamping or excessive tightness. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] In view of the problems existing in the prior art, this utility model provides a sliding door gauge to solve the technical problems mentioned in the background art, such as the difficulty in clamping doors of different sizes and shapes, and the inconvenience in adjusting the clamping position.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, this utility model provides the following technical solution: a sliding door inspection fixture, comprising a roller assembly, a door clamping mechanism, a clamping and engaging mechanism, and an adjustment auxiliary mechanism. The door clamping mechanism includes a hydraulic cylinder, a moving plate, a moving clamping rod, an adjusting sleeve, and an adjusting clamping rod. The hydraulic cylinder is installed at the bottom end of the roller assembly, the moving plate is installed at one end of the hydraulic cylinder, and the moving clamping rod is installed on both sides of the moving plate. The moving clamping rod slides on the roller assembly. Multiple sets of adjusting sleeves are installed at the top end of the roller assembly, and the adjusting clamping rod can extend into and be fixed inside the adjusting sleeve. The clamping and engaging mechanism includes a clamping tube, a clamping rod, a threaded sleeve, a rotating tooth, a push rod, a moving frame, and a toothed plate. The moving frame is longitudinally slidably installed on the outer wall of the clamping tube, the toothed plate is installed on the moving frame, the threaded sleeve is limited and rotatedly installed on the side wall of the clamping tube, the rotating tooth is installed at one end of the threaded sleeve, the push rod is threadedly connected to the threaded sleeve, and the toothed plate is meshed with the rotating tooth. The push rod can extend into or away from the clamping rod.
[0009] The present invention is further configured such that the adjustment auxiliary mechanism includes a spring rod, a mating hole, a rotating sleeve, a rotating clamp, and a clamping plate. The spring rod is mounted on the movable frame, and multiple sets of mating holes are longitudinally arranged on the outer wall of the clamping tube. The spring rod can extend into the mating holes step by step to make the movable frame move stably. The rotating sleeve is mounted on the outer wall of the clamping tube for limiting rotation. The rotating clamp is mounted on the side wall of the rotating sleeve. The clamping plate is mounted on the movable frame. The rotating clamp can fit the clamping plate in to fix the movable frame in the longitudinal direction.
[0010] The present invention is further provided that a support frame is installed at the bottom end of the roller assembly, and a base plate is installed at the bottom end of the support frame. The base plate increases the stability of the device and prevents shaking during operation.
[0011] The present invention is further configured such that a bottom rail is installed at the top end of the base plate, and bottom wheels are installed at the bottom end of the support frame. The bottom rail provides precise movement guidance to ensure that the movement trajectory of the device is controllable.
[0012] The present invention is further configured such that a drive assembly is installed at the bottom end of the support frame, the drive assembly is connected to the bottom wheel for transmission, the drive assembly provides the power source for the movement of the bottom wheel, reduces the intensity of manual operation, accurately controls the movement speed and position, and improves the detection and positioning accuracy.
[0013] The present invention is further configured such that a guide rail is installed at the bottom end of the roller assembly, and one end face of the moving plate is slidably guided in cooperation with the guide rail. The guide rail prevents the moving plate from shifting or shaking during movement, thereby improving the clamping accuracy.
[0014] The present invention is further configured such that a connecting plate is installed at the bottom end of the side wall of the card tube, and the connecting plate is fixedly installed on the side wall of the adjusting sleeve. The connecting plate firmly connects the clamping and locking mechanism with the door clamping mechanism to ensure the integrity of the overall structure.
[0015] The present invention is further configured such that one end of the locking rod extends through the adjusting sleeve and the adjusting clamp rod, fixing the adjusting clamp rod inside the adjusting sleeve. The locking rod extends through the adjusting sleeve and the adjusting clamp rod to form a core locking element. The design is simple and reliable, the force is evenly distributed, and local deformation is avoided.
[0016] (III) Beneficial Effects
[0017] Compared with the prior art, the present invention provides a sliding door inspection tool, which has the following beneficial effects:
[0018] This utility model is equipped with a door clamping mechanism. The movement of the moving plate and clamping rod is controlled by a hydraulic cylinder, which can precisely adjust the clamping force to ensure stable clamping of the sliding door. The design of the adjusting sleeve and adjusting clamping rod makes the clamping mechanism more flexible and can adapt to door bodies of different sizes. The moving clamping rod slides on the roller assembly to reduce friction and ensure smoothness and accuracy in the door clamping process.
[0019] This utility model is equipped with a clamping and locking mechanism. The design of the locking tube and locking rod ensures that the door body is firmly fixed during the clamping process, preventing the sliding door from loosening or shifting. The threaded connection design of the push rod and the screw sleeve, together with the meshing of the toothed plate and the rotating tooth, makes the force transmission during the clamping process stable and reliable, can maintain the precise position of the door body, adapt to door bodies of different thicknesses, and increase the applicability and versatility of the system.
[0020] This utility model is equipped with an adjustment auxiliary mechanism. The design of the spring rod and mating hole ensures that the moving frame moves smoothly during operation, avoiding vibration caused by uneven friction. The combination of the rotating sleeve and the rotating clamp ensures that the moving frame is fixed in the longitudinal direction, which helps to improve the clamping and locking accuracy. The design of the adjustment auxiliary mechanism not only enhances the stability of the mechanism, but also effectively reduces possible offset and shaking during movement, thereby improving working accuracy. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall structure of the device in the unused state of this utility model;
[0022] Figure 2 This is a schematic diagram of the roller assembly in this utility model from a bottom view.
[0023] Figure 3 This is a schematic diagram of the adjustment structure of the adjusting sleeve and adjusting clamp rod in this utility model;
[0024] Figure 4 This is a schematic diagram of the clamping and locking mechanism and the adjusting auxiliary mechanism in this utility model;
[0025] Figure 5This is a schematic diagram of the internal structure of the clamping and locking mechanism and the adjustment auxiliary mechanism in this utility model.
[0026] In the diagram: 1. Roller assembly; 2. Hydraulic cylinder; 3. Moving plate; 4. Moving clamping rod; 5. Adjusting sleeve; 6. Adjusting clamping rod; 7. Clamping pipe; 8. Clamping rod; 9. Screw sleeve; 10. Rotating gear; 11. Push rod; 12. Moving frame; 13. Tooth plate; 14. Spring rod; 15. Mating hole; 16. Rotating sleeve; 17. Rotating clamp; 18. Clamping plate; 19. Support frame; 20. Base plate; 21. Base rail; 22. Drive assembly; 23. Guide rail; 24. Connecting plate; 401. Bottom wheel. Detailed Implementation
[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.
[0029] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.
[0030] Please see Figures 1-5 A sliding door inspection fixture includes a roller assembly 1, a door clamping mechanism, a clamping and engaging mechanism, and an adjusting auxiliary mechanism. The door clamping mechanism includes a hydraulic cylinder 2, a moving plate 3, a moving clamping rod 4, adjusting sleeves 5, and adjusting clamping rods 6. The hydraulic cylinder 2 is installed at the bottom end of the roller assembly 1, the moving plate 3 is installed at one end of the hydraulic cylinder 2, and the moving clamping rods 4 are installed on both sides of the moving plate 3. The moving clamping rods 4 slide on the roller assembly 1. Multiple sets of adjusting sleeves 5 are installed at the top end of the roller assembly 1, and the adjusting clamping rods 6 can extend into and be fixed to the door. Inside the adjusting sleeve 5, the clamping and engaging mechanism includes a clamping tube 7, a clamping rod 8, a screw sleeve 9, a rotating tooth 10, a push rod 11, a moving frame 12, and a toothed plate 13. The moving frame 12 is longitudinally slidably mounted on the outer wall of the clamping tube 7, the toothed plate 13 is mounted on the moving frame 12, the screw sleeve 9 is limited and rotatably mounted on the side wall of the clamping tube 7, the rotating tooth 10 is mounted on one end of the screw sleeve 9, the push rod 11 is threadedly connected to the screw sleeve 9, the toothed plate 13 is meshed with the rotating tooth 10, and the push rod 11 can extend into or away from the clamping rod 8.
[0031] In this embodiment, the operator places the sliding door on the roller assembly 1 for testing. By controlling the hydraulic cylinder 2, the moving plate 3 is moved, causing the moving clamps 4 installed on both sides of the moving plate 3 to slide on the roller assembly 1. After the moving clamps 4 move to the appropriate position, the adjusting sleeve 5 is fixedly installed at the top end of the roller assembly 1. The operator selects a suitable adjusting clamp 6 according to the size and shape of the door and inserts it into the adjusting sleeve 5. The adjusting clamp 6 can form another clamping point on the door from the top, and the clamping and engaging mechanism is used for clamping. The device is fixed in the required position and posture for testing. The operator moves the moving frame 12, causing the toothed plate 13 to rotate the screw sleeve 9. The rotation of the screw sleeve 9 causes the push rod 11 to move laterally. When the push rod 11 extends in, it forms a tight contact with the locking rod 8, firmly locking the locking rod 8, thereby fixing the position of the adjusting clamp 6 in the adjusting sleeve 5. When the push rod 11 moves away, the locking rod 8 is released, making it easy to adjust or remove the adjusting clamp 6. This ensures the accuracy and reliability of the clamping process, and the complex locking function can be completed through a simple rotation operation.
[0032] The adjustment auxiliary mechanism includes a spring rod 14, a mating hole 15, a rotating sleeve 16, a rotating clamp 17, and a receiving plate 18. The spring rod 14 is mounted on the movable frame 12. Multiple sets of mating holes 15 are longitudinally arranged on the outer wall of the clamping tube 7. The spring rod 14 can extend into the mating holes 15 step by step to make the movable frame 12 move stably. The rotating sleeve 16 is mounted on the outer wall of the clamping tube 7 for limiting rotation. The rotating clamp 17 is mounted on the side wall of the rotating sleeve 16. The receiving plate 18 is mounted on the movable frame 12. The rotating clamp 17 can fit the receiving plate 18 in, so that the movable frame 12 is fixed in the longitudinal direction.
[0033] In this embodiment, to ensure the accuracy and stability of the clamping process, during the longitudinal sliding of the movable frame 12, the spring rod 14 installed on the movable frame 12 will gradually extend into the longitudinally arranged mating holes 15 on the outer wall of the clamping tube 7, providing the movable frame 12 with clear position feedback and a stable movement trajectory, preventing shaking or deviation during the sliding process. After the insertion and locking, the operator can manually rotate the rotating sleeve 16 installed on the outer wall of the clamping tube 7, so that the rotating clamp 17 on the rotating sleeve 16 engages with the receiving plate 18 on the movable frame 12. When the rotating clamp 17 fits the receiving plate 18, the movable frame 12 is locked in the longitudinal direction, further enhancing the stability of the clamping system.
[0034] Please see Figures 1-5As a supplementary embodiment of a sliding door inspection fixture for the door clamping mechanism, clamping and snapping mechanism and adjustment auxiliary mechanism: A support frame 19 is installed at the bottom end of the roller assembly 1, and a base plate 20 is installed at the bottom end of the support frame 19. A bottom rail 21 is installed at the top end of the base plate 20, and a bottom wheel 401 is installed at the bottom end of the support frame 19. A drive assembly 22 is installed at the bottom end of the support frame 19. The drive assembly 22 is connected to the bottom wheel 401 for transmission. A guide rail 23 is installed at the bottom end of the roller assembly 1, and one end face of the moving plate 3 is slidably guided in cooperation with the guide rail 23. A connecting plate 24 is installed at the bottom end of the side wall of the snapping pipe 7, and the connecting plate 24 is fixedly installed on the side wall of the adjusting sleeve 5. One end of the snapping rod 8 extends through the adjusting sleeve 5 and the adjusting clamping rod 6, fixing the adjusting clamping rod 6 inside the adjusting sleeve 5.
[0035] More specifically, the sliding door to be tested is placed on roller assembly 1. Start hydraulic cylinder 2 to push moving plate 3 to slide along guide rail 23, driving moving clamp 4 to rise to the appropriate position and contact the door to form support. According to the size and shape of the door, select appropriate adjusting clamp 6 and insert it into adjusting sleeve 5. Adjusting clamp 6 contacts the upper part of the door to form a clamping point. When the correct adjusting sleeve 5 is selected, the operator uses moving frame 12 to rotate screw sleeve 9, while spring rod 14 extends into mating hole 15 step by step to ensure smooth movement. As screw sleeve 9 rotates, push rod 11 gradually extends into contact locking rod 8, locking adjusting clamp 6 in the precise position inside adjusting sleeve 5. To further ensure clamping stability, the operator rotates rotating sleeve 16 so that rotating clamp 17 fits the clamping plate 18, forming a second locking on moving frame 12. At this time, the door is firmly fixed on the inspection fixture, and the upper and lower clamping points form stable support. After the door is fixed, the inspector can carry out various inspection work, such as size measurement, flatness inspection, sliding performance testing, etc. Because of the secure clamping, the test results are accurate and reliable. If necessary, the bottom wheel 401 can be moved along the bottom rail 21 by the drive assembly 22 to adjust the position of the gauge for different tests.
[0036] In summary, when the overall equipment is in use or operation: When the door clamping mechanism is required, the operator places the sliding door on the roller assembly 1 for testing. By controlling the hydraulic cylinder 2, the moving plate 3 is moved, causing the moving clamping rods 4 installed on both sides of the moving plate 3 to slide on the roller assembly 1. After the moving clamping rods 4 move to the appropriate position, the adjusting sleeve 5 is fixedly installed at the top end of the roller assembly 1. The operator selects a suitable adjusting clamping rod 6 according to the size and shape of the door and inserts it into the adjusting sleeve 5. The adjusting clamping rod 6 can form another clamping point on the door from the top and is fixed by the clamping and locking mechanism to maintain the required position and posture for testing.
[0037] When the clamping mechanism needs to be operated, the operator moves the moving frame 12, causing the toothed plate 13 to drive the screw sleeve 9 to rotate. The rotation of the screw sleeve 9 causes the push rod 11 to move laterally. When the push rod 11 extends in, it forms a tight contact with the clamping rod 8, firmly locking the clamping rod 8, thereby fixing the position of the adjusting clamping rod 6 in the adjusting sleeve 5. When the push rod 11 moves away, the clamping rod 8 is released, making it easy to adjust or remove the adjusting clamping rod 6, ensuring the accuracy and reliability of the clamping process. Complex locking functions can be completed through simple rotation operations.
[0038] When the auxiliary mechanism needs to be adjusted, the accuracy and stability of the clamping process are ensured. During the longitudinal sliding of the moving frame 12, the spring rod 14 installed on the moving frame 12 will extend into the longitudinally arranged mating holes 15 on the outer wall of the clamping tube 7 step by step, providing clear position feedback and a stable movement trajectory for the moving frame 12, preventing shaking or deviation during the sliding process. After the extension and locking, the operator can manually rotate the rotating sleeve 16 installed on the outer wall of the clamping tube 7, so that the rotating clamp 17 on the rotating sleeve 16 engages with the receiving plate 18 on the moving frame 12. When the rotating clamp 17 fits the receiving plate 18, the moving frame 12 is locked in the longitudinal direction, further enhancing the stability of the clamping system.
[0039] Place the sliding door to be inspected on the roller assembly 1. Activate the hydraulic cylinder 2 to push the moving plate 3 along the guide rail 23, causing the moving clamp 4 to rise to the appropriate position and contact the door to form support. Select a suitable adjusting clamp 6 according to the door's size and shape and insert it into the adjusting sleeve 5. The adjusting clamp 6 contacts the upper part of the door to form a clamping point. When the correct adjusting sleeve 5 is selected, the operator uses the moving frame 12 to rotate the screw sleeve 9, while the spring rod 14 gradually extends into the mating hole 15 to ensure smooth movement. As the screw sleeve 9 rotates, the push rod 11 gradually extends into the contact locking rod 8, locking the adjusting clamp 6 in the precise position within the adjusting sleeve 5. To further ensure clamping stability, the operator rotates the rotating sleeve 16, causing the rotating clamp 17 to fit the clamping plate 18, forming a second locking on the moving frame 12. At this point, the door is firmly fixed to the inspection fixture, and the upper and lower clamping points form stable support. After the door is fixed, the inspectors can perform various inspection tasks, such as dimensional measurement, flatness inspection, and sliding performance testing. Because of the secure clamping, the test results are accurate and reliable. If necessary, the bottom wheel 401 can be moved along the bottom rail 21 by the drive assembly 22 to adjust the position of the gauge for different tests.
[0040] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.
Claims
1. A sliding door inspection fixture, comprising a roller assembly (1), a door clamping mechanism, a clamping and engaging mechanism, and an adjusting auxiliary mechanism, characterized in that: The door clamping mechanism includes a hydraulic cylinder (2), a moving plate (3), a moving clamping rod (4), an adjusting sleeve (5), and an adjusting clamping rod (6). The hydraulic cylinder (2) is installed at the bottom end of the roller assembly (1), the moving plate (3) is installed at one end of the hydraulic cylinder (2), the moving clamping rod (4) is installed on both sides of the moving plate (3), and the moving clamping rod (4) slides on the roller assembly (1). Multiple sets of adjusting sleeves (5) are installed at the top end of the roller assembly (1), and the adjusting clamping rod (6) can extend into and be fixed in the adjusting sleeve (5). The clamping and locking mechanism includes a locking tube (7). The components include a snap-fit rod (8), a threaded sleeve (9), a rotating tooth (10), a push rod (11), a moving frame (12), and a toothed plate (13). The moving frame (12) is longitudinally slidably mounted on the outer wall of the snap-fit tube (7). The toothed plate (13) is mounted on the moving frame (12). The threaded sleeve (9) is limited and rotated on the side wall of the snap-fit tube (7). The rotating tooth (10) is mounted on one end of the threaded sleeve (9). The push rod (11) is threadedly connected to the threaded sleeve (9). The toothed plate (13) is meshed with the rotating tooth (10). The push rod (11) can extend into or away from the snap-fit rod (8).
2. The sliding door inspection fixture according to claim 1, characterized in that: The adjustment auxiliary mechanism includes a spring rod (14), a mating hole (15), a rotating sleeve (16), a rotating clamp (17), and a clamping plate (18). The spring rod (14) is installed on the moving frame (12). The mating hole (15) is longitudinally arranged on the outer wall of the clamping tube (7). The spring rod (14) can be inserted into the mating hole (15) step by step to make the moving frame (12) move stably. The rotating sleeve (16) is installed on the outer wall of the clamping tube (7) for limiting rotation. The rotating clamp (17) is installed on the side wall of the rotating sleeve (16). The clamping plate (18) is installed on the moving frame (12).
3. A sliding door inspection fixture according to claim 1, characterized in that: The bottom end of the roller assembly (1) is provided with a support frame (19), and the bottom end of the support frame (19) is provided with a base plate (20).
4. A sliding door inspection fixture according to claim 3, characterized in that: The bottom plate (20) is provided with a bottom rail (21) at the top end, and the bottom wheel (401) is installed at the bottom end of the support frame (19).
5. A sliding door inspection fixture according to claim 3, characterized in that: The bottom end of the support frame (19) is equipped with a drive assembly (22), which is connected to the bottom wheel (401) for transmission.
6. A sliding door inspection fixture according to claim 1, characterized in that: The bottom end of the roller assembly (1) is provided with a guide rail (23), and one end face of the moving plate (3) is slidably guided in cooperation with the guide rail (23).
7. A sliding door inspection fixture according to claim 1, characterized in that: A connecting plate (24) is installed at the bottom of the side wall of the card tube (7), and the connecting plate (24) is fixedly installed on the side wall of the adjusting sleeve (5).
8. A sliding door inspection fixture according to claim 1, characterized in that: One end of the snap-fit rod (8) extends through the adjusting sleeve (5) and the adjusting clamp rod (6) to fix the adjusting clamp rod (6) inside the adjusting sleeve (5).