Adjustable door leaf vertical shaft assembling platform

Abstract

The utility model provides an adjustable door leaf vertical shaft assembling platform which is used for solving the problem that the matching relation between a door leaf and a vertical column cannot be adjusted in the prior art. The assembling platform comprises a platform body and a vertical shaft, a sliding rail is arranged on one side of the platform body, elastic telescopic rods are arranged at the two ends of the sliding rail in a sliding mode, positioning supports are fixed to the elastic telescopic rods, three-jaw chucks are arranged on the opposite faces of the positioning supports, the vertical shaft can be fixed through the three-jaw chucks, and an upper clamping plate and a lower clamping plate which stretch out and draw back at the same time are arranged at the upper end and the lower end of each positioning support. The upper clamping plate and the lower clamping plate can clamp longitudinal channel steel of a door leaf, and the axis of the three-jaw chuck coincides with the middle face between the upper clamping plate and the lower clamping plate. The vertical shaft can be fixed through the three-jaw chuck, the upper clamping plate and the lower clamping plate stretch out and draw back at the same time, so that the vertical shaft can be accurately located in the center of a door leaf, and universality and flexibility of the device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of manufacturing civil air defense doors, in particular to an adjustable door leaf vertical axis assembly platform. Background Art

[0002] Civil air defense doors are the doors at the entrance and exit of civil air defense projects. They are indispensable protective equipment in civil air defense projects. Their main function is to protect the safety of personnel and materials in emergency situations such as war or natural disasters. The steel structure door leaves of civil air defense doors need to be assembled with the door leaf vertical axis during the production process. During the assembly process, manual marking is required, which is time-consuming, labor-intensive, and prone to errors.

[0003] The existing Chinese patent with application number 202223253936.4 discloses a vertical axis welding tool for civil air defense doors, which clamps the workpiece through a chuck fixed on the fixed seat to perform welding operations. When the welding tool is in use, the distance between the two fixed seats can be adjusted according to the specific length of the vertical axis. The fixed seat and the base can be fixedly connected by bolts, and the support seat generally only needs to be adjusted and installed in the middle position of the two fixed seats through the guide rail to play a role in strengthening support. The above scheme has the following defects. When the scheme uses a chuck to fix the column, the matching relationship between the vertical axis seat and the column cannot be ensured, and it cannot adapt to door frames of multiple specifications. Utility Model Content

[0004] The utility model provides an adjustable door leaf vertical shaft assembly platform, which solves the problem in the prior art that the matching relationship between the door leaf and the vertical column cannot be adjusted.

[0005] The technical solution of the utility model is achieved in this way:

[0006] An adjustable door leaf vertical axis assembly platform comprises a platform and a vertical axis, a slide rail is arranged on one side of the platform, elastic telescopic rods are slidably arranged at both ends of the slide rail, a positioning bracket is fixed on the elastic telescopic rod, a three-jaw chuck is arranged on the opposite side of the positioning bracket, the three-jaw chuck can clamp and fix the vertical axis, an upper clamping plate and a lower clamping plate which can be retracted at the same time are arranged on the upper side of the positioning bracket, the upper clamping plate and the lower clamping plate can clamp the longitudinal channel steel of the door leaf, and the axis of the three-jaw chuck coincides with the middle surface between the upper clamping plate and the lower clamping plate.

[0007] Furthermore, the positioning bracket includes a positioning box, a positioning gear is rotated in the positioning box through a rotating shaft, positioning racks are meshed on both sides of the positioning gear, and the positioning racks pass through the positioning box, one positioning rack is connected to the upper clamping plate, and the other positioning rack is connected to the lower clamping plate away from the upper clamping plate, and the upper clamping plate and the lower clamping plate are both provided with through holes for the positioning rack to slide, and the positioning gear is driven by a driving device. Through the precise matching of the rack and the positioning gear, the clamping action can be highly repeated, ensuring the consistency of the processing process and the product quality.

[0008] Furthermore, the driving device includes a driving gear fixed on the rotating shaft, a positioning hole is formed through the side wall of the positioning box, a fixed rack slides in the positioning hole, the fixed rack is a screw, and the screw removes material to form a rack meshing with the driving gear on the side wall of the screw, the positioning hole is the same as the largest cross section of the fixed rack, and a nut is screwed on one end of the fixed rack outside the positioning box. Manually controlling and fixing the upper and lower clamping plates can reduce dependence on electricity, reduce risks caused by electrical failures, and improve operational safety.

[0009] Furthermore, a roller is provided on the platform, the axis of which is parallel to the axis of the vertical shaft, and limit plates are slidably provided at both ends of the bottom of the platform, the limit plates are close to both ends of the roller, and a bidirectional screw is provided at the bottom of the platform, which can drive the limit plates to approach or move away from the platform at the same time, and the middle surface between the two limit plates coincides with the center line of the platform. By driving the limit plates with the bidirectional screw, the precise center positioning of the door leaf on the platform can be achieved, and then by rolling the roller, the assembly requirements of various door leaves can be easily met, thereby improving the versatility and flexibility of the platform.

[0010] Furthermore, a plurality of elastic telescopic rods are slidably mounted on the slide rail, and an arc-shaped receiving portion is disposed at the top of the elastic telescopic rod near the center of the slide rail, and the bottom of the receiving portion inside can be tangent to the vertical shaft. Since the receiving portion is tangent to the vertical shaft, a stable supporting force can be provided to ensure that the vertical shaft remains stable during the assembly process, and a flexible supporting point is formed, which can effectively support the vertical shaft and reduce the damage that may be caused to the surface of the vertical shaft or the positioning bracket to a certain extent.

[0011] Furthermore, the slide rail is a T-shaped slide rail, the elastic telescopic rods all slide in the slide rail through the T-shaped slider, and the side walls of the elastic telescopic rods are connected with fixing nuts. The elastic telescopic rods can be easily fixed at a desired position through the fixing nuts, simplifying the installation process and making the operation faster and more convenient.

[0012] Furthermore, the elastic telescopic rod is a gas spring, the top of which is higher than the center of the thickness of the door leaf and smaller than the top surface of the door leaf. The gas spring has certain elasticity and buffering properties, which can absorb and mitigate sudden forces, such as accidental collisions, to a certain extent, thereby improving the safety of operation.

[0013] Furthermore, the top surface of the slide rail is provided with a scale, the zero line of the scale coincides with the center line of the platform, and the scale gradually increases toward both ends of the slide rail. The scale not only provides position information, but also improves the positioning accuracy, so that the staff can accurately adjust the position of the vertical axis according to the indication of the scale to ensure that it is accurately aligned with the center line of the door leaf.

[0014] Beneficial effects:

[0015] The utility model can fix the vertical shaft through the three-claw chuck, and through the simultaneous extension and contraction of the upper clamping plate and the lower clamping plate, the vertical shaft can be accurately located at the center of the door leaf, and the slide rail on one side of the platform and the slidable elastic telescopic rod can adjust the position of the vertical shaft relative to the door leaf, so that the device can adapt to door leaves of different sizes and vertical shafts of different lengths, increasing the versatility and flexibility of the device. By rotating the nut to make it abut against the side wall of the positioning box, the position of the positioning rack is fixed by friction, and the self-locking of the clamping state is achieved to prevent displacement caused by equipment vibration or other external forces. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 This is a bottom-up three-dimensional structural schematic diagram of the utility model;

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the positioning bracket of the utility model;

[0020] Figure 4 It is a three-dimensional structural schematic diagram of the positioning box of the utility model;

[0021] Figure 5 It is a cross-sectional view of the positioning box of the utility model;

[0022] Figure 6 This is an exploded view of the positioning box of the utility model;

[0023] Figure 7 It is a sectional isometric view of the positioning box of the utility model.

[0024] Among them: 1. platform, 2. vertical axis, 3. slide rail, 4. elastic telescopic rod, 5. positioning bracket, 6. three-jaw chuck, 7. upper splint, 8. lower splint, 9. positioning box, 10. positioning gear, 11. positioning rack, 12. through hole, 13. driving gear, 14. positioning hole, 15. fixed rack, 16. nut, 17. roller shaft, 18. limit plate, 19. bidirectional screw, 20. receiving part, 21. T-shaped slider, 22. fixing nut, 23. scale. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figure 1-3 As shown, an embodiment of the utility model provides an adjustable door leaf vertical axis assembly platform, including a platform 1 and a vertical axis 2, a slide rail 3 is provided on one side of the platform 1, elastic telescopic rods 4 are slidably provided at both ends of the slide rail 3, a positioning bracket 5 is fixed on the elastic telescopic rod 4, a three-jaw chuck 6 is provided on the opposite side of the positioning bracket 5, the three-jaw chuck 6 can clamp and fix the vertical axis 2, an upper clamp plate 7 and a lower clamp plate 8 which can be retracted at the same time are provided on the positioning bracket 5, the upper clamp plate 7 and the lower clamp plate 8 can clamp the longitudinal channel steel of the door leaf, and the axis of the three-jaw chuck 6 coincides with the middle surface between the upper clamp plate 7 and the lower clamp plate 8.

[0027] During use, the vertical shaft 2 is sleeved on the vertical shaft seat, and the two ends of the vertical shaft 2 are respectively fixed on the three-claw chuck 6, and then the door leaf is placed on the platform 1, so that the longitudinal channel steel of the door leaf is against the vertical shaft seat, and then the relative position of the vertical shaft 2 and the door leaf is adjusted by the slide rail 3, and the three-claw chuck 6 of the positioning bracket 5 can always be located at the center of the longitudinal channel steel of the door leaf through the upper clamping plate 7 and the lower clamping plate 8 that are telescopic at the same time, and then welding can be performed. The vertical shaft 2 can be fixed by the three-claw chuck 6, and the upper clamping plate 7 and the lower clamping plate 8 can be telescopic at the same time, so that the vertical shaft 2 can be accurately located at the center of the door leaf, and then the slide rail 3 on one side of the platform 1 and the slidable elastic telescopic rod 4 can adjust the position of the vertical shaft 2 relative to the door leaf, so that the device can adapt to door leaves of different sizes and vertical shafts 2 of different lengths, increasing the versatility and flexibility of the device. The slide rail 3 allows the three-claw chuck 6 to drive the vertical shaft 2 to move along a predetermined track to reach the desired position. The elastic telescopic rod 4 provides a stable support and allows a certain degree of telescoping to facilitate the installation and adjustment of the vertical shaft 2.

[0028] like Figure 3-7As shown, the positioning bracket 5 includes a positioning box 9, in which a positioning gear 10 is rotated by a rotating shaft, and positioning racks 11 are meshed on both sides of the positioning gear 10. The positioning racks 11 penetrate the positioning box 9, one of the positioning racks 11 is connected to the upper clamping plate 7, and the other positioning rack 11 is connected to the lower clamping plate 8 away from the upper clamping plate 7. The upper clamping plate 7 and the lower clamping plate 8 are both provided with through holes 12 for the positioning rack 11 to slide, and the positioning gear 10 is driven by a driving device. The driving device can be a stepping motor, a servo motor or a self-locking motor, and the above motors are all prior art. The positioning gear 10 is driven to rotate by the rotation of the motor, and the positioning gear 10 drives the racks on both sides to move in opposite directions at the same time, so as to realize the simultaneous extension and retraction of the upper clamping plate 7 and the lower clamping plate 8, thereby ensuring the uniform distribution of the clamping force and the precise control of the workpiece, and improving the repeat positioning accuracy. By adjusting the speed and rotation direction of the motor, the magnitude of the clamping force and the movement speed of the clamping plate can be easily adjusted to adapt to the door leaf vertical shaft 2 of different thicknesses and materials. The meshing design of the positioning gear 10 and the racks on both sides ensures the synchronous movement of the upper clamping plate 7 and the lower clamping plate 8. Through the gear rack transmission, a larger clamping force can be generated, and the clamping force can be evenly distributed on the clamped object, avoiding the problem of the vertical axis 2 tilting due to uneven clamping force. The fast response characteristics of the motor enable the clamping device to quickly reach the required clamping state, thereby improving production efficiency.

[0029] The driving device includes a driving gear 13 fixed on the rotating shaft, and a positioning hole 14 is provided through the side wall of the positioning box 9. A fixed rack 15 slides in the positioning hole 14. The fixed rack 15 is a screw. The screw removes material to form a rack meshing with the driving gear 13 on the side wall of the screw. The positioning hole 14 has the same maximum cross-section as the fixed rack 15. A nut 16 is screwed on one end of the fixed rack 15 located outside the positioning box 9. When it is necessary to control the upper clamping plate 7 and the lower clamping plate 8 to move simultaneously, the positioning rack 11 is pulled, and the rack meshes and rotates with the driving gear 13 to achieve telescopic movement. Then, the nut 16 is rotated to make the nut 16 abut against the side wall of the positioning box 9, so that the nut 16 is fixed by friction with the side wall of the positioning box 9. The straight edge of the side wall of the rack cooperates with the positioning hole 14 to limit the positioning rack 11, so as to prevent the problem that the rack cannot mesh with the driving gear 13 due to the rotation of the positioning rack 11. By pulling the positioning rack 11 to control the movement of the upper clamping plate 7 and the lower clamping plate 8, a simple manual adjustment method is provided, so that precise operation can still be performed when there is no electricity or fine-tuning is required. By turning the nut 16 to make it abut against the side wall of the positioning box 9, the position of the positioning rack 11 is fixed by friction, and the clamping state is self-locking to prevent displacement caused by equipment vibration or other external forces. The close fit between the positioning hole 14 and the positioning rack 11 can effectively prevent the positioning rack 11 from rotating in a non-pulling state, ensuring the stability and reliability of the operation.

[0030] like Figure 2 As shown, a roller shaft 17 is provided on the platform 1, and the axis of the roller shaft 17 is parallel to the axis of the vertical shaft 2. The two ends of the bottom of the platform 1 slide with limit plates 18, and the limit plates 18 are close to the two ends of the roller shaft 17. A bidirectional screw 19 is provided at the bottom of the platform 1, and the bidirectional screw 19 can drive the limit plates 18 to approach or move away from the platform 1 at the same time, and the middle surface between the two limit plates 18 coincides with the center line of the platform 1. The bidirectional screw 19 is driven by a motor, and the bidirectional screw 19 can also be a double-axis motor, and screws with opposite thread directions are fixed at both ends of the double-axis motor. The bidirectional screw 19 and the motor are both prior art. By coinciding the axis of the bidirectional screw 19 with the center line of the platform 1, it is ensured that the door leaf always remains on the center line of the platform 1 during the movement, so that the vertical shaft 2 can be accurately placed in the center of the door leaf, and can stably fix the door leaf, prevent the door leaf from shifting during the processing, and ensure the processing accuracy and safety. The roller 17 allows the door leaf to slide easily on the platform 1, which not only reduces the difficulty of operation, but also improves work efficiency, and can also reduce the direct friction between the door leaf and the platform 1 during the sliding process, reduce the wear on the surface of the platform 1, and extend the service life of the equipment.

[0031] like Figure 3 As shown, the slide rail 3 is a T-shaped slide rail 3, and the elastic telescopic rod 4 slides in the slide rail 3 through the T-shaped slider 21, and the side wall of the elastic telescopic rod 4 is connected with a fixing nut 22. The T-shaped slide rail 3 and the T-shaped slider 21 provide a larger contact area and friction, which helps to reduce the shaking of the elastic telescopic rod 4 during the sliding process, and ensures the stability of the assembly process of the door leaf vertical shaft 2. When the position of the elastic telescopic rod 4 needs to be adjusted to adapt to door leaves of different thicknesses or vertical shafts 2 of different diameters, the operator can quickly loosen the fixing nut 22, move the elastic telescopic rod 4 to a new position, and then tighten it again, providing a high degree of flexibility. The fixing nut 22 can effectively prevent the movement of the elastic telescopic rod 4 due to accidental touch or other external forces during operation, thereby avoiding possible assembly errors or safety issues.

[0032] A plurality of elastic telescopic rods 4 slide on the slide rail 3, and an arc-shaped receiving portion 20 is provided at the top of the elastic telescopic rod 4 near the center of the slide rail 3, and the bottom of the inner side of the receiving portion 20 can be tangent to the vertical shaft 2. The elastic telescopic rod 4 can be adjusted to telescopically according to the vertical shaft 2 of different diameters, so that the receiving portion 20 can adapt to and stably support vertical shafts 2 of various sizes, thereby improving the versatility and flexibility of the device. In addition, the elastic telescopic rod 4 has a certain buffering effect, which can absorb and reduce the vibration generated during welding or other operations, and protect the vertical shaft 2 and the positioning bracket 5 from impact. The arc-shaped receiving portion 20 enables the vertical shaft 2 to obtain uniform supporting force when being supported, and the arc-shaped receiving portion 20 design enables the vertical shaft 2 to be stably placed on the receiving portion 20, thereby avoiding the damage that may be caused by the vertical shaft 2 directly contacting the positioning bracket 5.

[0033] The elastic telescopic rod 4 is a gas spring, and the top of the gas spring is higher than the center of the thickness of the door leaf and smaller than the top surface of the door leaf. The gas spring is an adjustable gas spring, which is a prior art. The adjustable gas spring allows the operator to adjust the preload and stroke length of the gas spring according to the thickness of the door leaf and the diameter of the vertical shaft 2, thereby ensuring that the vertical shaft 2 can be firmly supported in the appropriate position and can adapt to various door leaves of different thicknesses and vertical shafts 2 of different diameters, thereby improving the versatility and flexibility of the equipment. The flexible support provided by the gas spring can reduce the absorption of impact force when subjected to external force during welding, and reduce the risk of damage to incomplete welds.

[0034] like Figure 1 , 3 As shown, the top surface of the slide rail 3 is provided with a scale 23, the zero line of the scale 23 coincides with the center line of the platform 1, and the scale 23 gradually increases toward the two ends of the slide rail 3. The side wall of the elastic telescopic rod 4 can be provided with a reference point. Through the setting of the scale 23, the staff can intuitively check the position of the vertical axis 2 on the slide rail 3, making the positioning and adjustment of the vertical axis 2 simpler and clearer, and can also reduce the error in the welding process and improve the overall quality of the product.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An adjustable door leaf vertical shaft assembly platform, comprising a platform (1) and a vertical shaft (2), characterized in that: A slide rail (3) is provided on one side of the platform (1), elastic telescopic rods (4) are slidably mounted at both ends of the slide rail (3), a positioning bracket (5) is fixed on the elastic telescopic rod (4), a three-jaw chuck (6) is provided on the opposite side of the positioning bracket (5), the three-jaw chuck (6) can fix the vertical shaft (2), and upper and lower ends of the positioning bracket (5) are provided with an upper clamping plate (7) and a lower clamping plate (8) that can be extended and retracted simultaneously, the upper clamping plate (7) and the lower clamping plate (8) can clamp the longitudinal channel steel of the door leaf, and the axis of the three-jaw chuck (6) coincides with the middle surface between the upper clamping plate (7) and the lower clamping plate (8).

2. The adjustable door leaf vertical axis assembly platform according to claim 1, characterized in that: The positioning bracket (5) comprises a positioning box (9), a positioning gear (10) is rotated in the positioning box (9) via a rotating shaft, positioning racks (11) are meshed on both sides of the positioning gear (10), and the positioning racks (11) pass through the positioning box (9), one of the positioning racks (11) is connected to the upper clamping plate (7), and the other positioning rack (11) is connected to the lower clamping plate (8) away from the upper clamping plate (7), and the upper clamping plate (7) and the lower clamping plate (8) are both provided with through holes (12) for the positioning rack (11) to slide, and the positioning gear (10) is driven by a driving device.

3. The adjustable door leaf vertical axis assembly platform according to claim 2, characterized in that: The driving device comprises a driving gear (13) fixed on a rotating shaft, a positioning hole (14) is passed through the side wall of the positioning box (9), a fixed rack (15) is slidably arranged in the positioning hole (14), the fixed rack (15) is a screw rod, and the screw rod side wall forms a rack meshing with the driving gear (13) by removing material, the positioning hole (14) and the fixed rack (15) have the same maximum cross-section, and a nut (16) is screwed to one end of the fixed rack (15) located outside the positioning box (9).

4. The adjustable door leaf vertical axis assembly platform according to claim 1, characterized in that: A roller shaft (17) is provided on the platform (1), the axis of the roller shaft (17) is parallel to the axis of the vertical shaft (2), and limit plates (18) are slidably provided at both ends of the bottom of the platform (1), the limit plates (18) are close to both ends of the roller shaft (17), and a bidirectional screw rod (19) is provided at the bottom of the platform (1), and the bidirectional screw rod (19) can drive the limit plates (18) to approach or move away from the platform (1) at the same time, and the middle surface between the two limit plates (18) coincides with the center line of the platform (1).

5. The adjustable door leaf vertical axis assembly platform according to claim 1, characterized in that: A plurality of elastic telescopic rods (4) are slidably mounted on the slide rail (3); an arc-shaped receiving portion (20) is disposed at the top of the elastic telescopic rod (4) near the center of the slide rail (3); and the bottom of the receiving portion (20) can be tangent to the vertical shaft (2).

6. The adjustable door leaf vertical axis assembly platform according to claim 1, characterized in that: The slide rail (3) is a T-shaped slide rail (3), and the elastic telescopic rod (4) slides in the slide rail (3) through a T-shaped sliding block (21), and the side wall of the elastic telescopic rod (4) is connected with a fixing nut (22).

7. An adjustable door leaf vertical axis assembly platform according to claim 1 or 5, characterized in that: The elastic telescopic rod (4) is a gas spring, the top end of which is higher than the center of the thickness of the door leaf and smaller than the top surface of the door leaf.

8. The adjustable door leaf vertical axis assembly platform according to claim 1, characterized in that: The top surface of the slide rail (3) is provided with a scale (23), the zero line of the scale (23) coincides with the center line of the platform (1), and the scale (23) gradually increases toward the two ends of the slide rail (3).

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