Portable device suitable for adjusting marking height of part
The portable device combining reduction gears and worm gears solves the problem of limited jack height adjustment, enabling precise adjustment and efficient scribing of parts.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-13
- Publication Date
- 2026-03-13
AI Technical Summary
The existing jacks have a pitch-type height adjustment, which cannot meet the lifting height requirements of less than Lmm, and cannot be used in scenarios with limited operating space, resulting in poor scribing accuracy and limited use.
The system employs a combination of reduction gears and worm gears, using a rocker arm to drive the lifting bracket to adjust its height within the movable pipe. This worm gear combination enables precise adjustment and reduces space requirements.
It enables precise adjustment of the scribing height on parts, improves scribing accuracy, reduces the need for workspace, and increases work efficiency.
Smart Images
Figure CN121649948A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of scribing devices, specifically a portable device suitable for adjusting the scribing height of parts. Background Technology
[0002] The scribing process is a crucial preparatory step in machining and manufacturing. Its main purpose is to analyze and adjust the product's shape to mark key dimensional lines on the workpiece surface, including boundaries and positions that will be referenced for subsequent machining. For medium to large castings with uneven surfaces and inherent deformation, scribing must consider the workpiece's own center line and other relevant dimensions. For such products, a common method is to place the workpiece flat on a scribing platform of equal height. Then, based on the workpiece's center position, the workpiece's horizontal position is adjusted by using jacks at its four corners to ensure accurate marking of the horizontal center line.
[0003] The current operating procedure of using jacks to adjust the horizontal position of workpieces has the following drawbacks: the jack adjusts the height in a pitch manner, that is, each press raises the workpiece by Lmm. For cases where the lifting height is ≤Lmm, it cannot meet the requirements, resulting in poor scribing accuracy. At the same time, the jack mainly uses the lever principle, that is, a long arm with a small force pries a short arm with a large force. In some operation scenarios with limited operating space, the pry bar cannot be used, which limits the use of jacks. Therefore, we propose a portable device suitable for adjusting the scribing height of parts. Summary of the Invention
[0004] To address the shortcomings of existing portable devices for adjusting the height of scribing lines on parts, this invention provides a portable device for adjusting the height of scribing lines on parts. It features a rotating rocker wheel, which, through the action of a reduction gear and a worm gear, allows for adjustment of the height of the lifting bracket inside the movable pipe. This reduces the space required for the device and solves the problems mentioned in the background art.
[0005] This invention provides the following technical solution: a portable device suitable for adjusting the height of scribing lines on parts, comprising a housing, a movable pipe fixedly connected inside the housing, a lifting bracket movably sleeved inside the movable pipe, a straight tooth fixedly connected to one side of the lifting bracket, the straight tooth passing through the interior of one side of the movable pipe, a first cover fixedly connected to the side of the movable pipe, a second cover installed inside the first cover, a transmission rod movably sleeved inside the first cover, a turbine and a second limiting sleeve installed at the top of the transmission rod, a first limiting sleeve sleeved outside the lower end of the transmission rod, a first gear, a second gear, a third gear and a third gear installed inside the second cover, a rocker wheel connected to the outside of the third gear, the rocker wheel extending to the outside of the housing.
[0006] Preferably, the lifting bracket has a sliding groove inside, and a guide rail is fixedly connected inside the movable pipe, with the guide rail sleeved inside the sliding groove.
[0007] Preferably, the second limiting sleeve is fitted inside the first cover, and the two ends of the transmission rod are rhomboid, and the second limiting sleeve and the first limiting sleeve are clamped on the inner side of the first cover.
[0008] Preferably, the straight teeth extend into the interior of the first housing, and the first housing and the turbine are connected to each other via a turbine mechanism.
[0009] Preferably, a gear is installed at the top of the first limiting sleeve, and a first steering gear is meshed on one side of the gear. The first steering gear synchronous limiting device is installed inside the first cover. The first steering gear is installed vertically on the side of the first steering gear, and the first steering gear is connected to the first gear installed inside the second cover.
[0010] Preferably, the second gear and the third gear are mounted on one side of the first gear and the third gear, and the second gear and the third gear are meshed with the first gear and the third gear respectively. The diameter of the first gear is larger than the diameter of the second gear, and the diameter of the third gear is larger than the diameter of the third gear. The middle part of the first gear and the third gear is disconnected.
[0011] Preferably, the movable pipe is equipped with an adjustable scale marked with a "0" mark.
[0012] Compared with existing portable devices for adjusting the height of scribing lines on parts, the present invention has the following advantages:
[0013] This portable device, applicable to adjusting the scribing height of parts, utilizes a reduction gear set consisting of a first gear, a second gear, a third gear, and a gear in the shape of the third gear, and a worm gear combination composed of a worm and straight teeth, installed inside the first housing. This enables precise adjustment of the scribing height of parts when the lifting bracket is adjusted inside the moving pipe. It allows for the adjustment of the scribing position and specific adjustment amount of heavier parts with relatively small force. At the same time, the use of a rocker wheel instead of a pry bar reduces the required workspace, reduces ineffective work, and improves work efficiency. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the main structure of the present invention;
[0015] Figure 2 This is an exploded view of the structure of the present invention;
[0016] Figure 3 This is a partial cross-sectional view of the main body of the present invention;
[0017] Figure 4 This is a schematic cross-sectional view of the main body of the present invention;
[0018] Figure 5 This is an enlarged structural diagram of point A in the present invention.
[0019] In the diagram: 1. Outer shell; 2. Movable pipe; 3. Lifting bracket; 4. Slide groove; 5. Guide rail; 6. Straight toothed bar; 7. First cover; 8. Second cover; 9. Transmission rod; 10. First limiting sleeve; 11. Turbine; 12. Second limiting sleeve; 13. First steering gear; 14. Second steering gear; 15. First gear; 16. Second gear; 17. Third gear; 18. Fourth gear; 19. Rocker wheel. Detailed Implementation
[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.
[0021] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5A portable device for adjusting the scribing height of parts includes a housing 1. A movable pipe 2 is fixedly connected inside the housing 1, limiting the movement trajectory of a lifting bracket 3. The lifting bracket 3 is movably fitted inside the movable pipe 2. By observing the up-and-down movement trajectory of the lifting bracket 3, the scribing height can be detected. A straight tooth 6 is fixedly connected to one side of the lifting bracket 3, passing through the interior of one side of the movable pipe 2. A first cover 7 is fixedly connected to the side of the movable pipe 2. A second cover 8 is installed inside the first cover 7. A transmission rod 9 is movably fitted inside the first cover 7. A turbine 11 and a second limiting sleeve 12 are installed at the top of the transmission rod 9. When the transmission rod 9 rotates, the transmission rod 9 drives the turbine 11 to rotate synchronously. At the same time, the turbine 11 and the straight tooth 6 rotate with each other, which can drive the lifting bracket 3 to adjust its height inside the movable pipe 2. The lower end of the transmission rod 9 is sleeved with a first limiting sleeve 10. The second cover 8 is equipped with a first gear 15, a second gear 16, a third gear 17 and a third gear 18. The reduction gear set composed of the first gear 15, the second gear 16, the third gear 17 and the third gear 18 reduces the force consumed during the rotation of the rocker wheel 19 and improves the accuracy of the height adjustment of the lifting bracket 3. The rocker wheel 19 is connected to the outside of the third gear 18 and extends to the outside of the outer shell 1.
[0022] Please see Figure 2 The lifting bracket 3 has a sliding groove 4 inside, and the movable pipe 2 is fixedly connected to a guide rail 5 inside. The guide rail 5 is sleeved inside the sliding groove 4. By opening a sliding groove 4 on the outside of the lifting bracket 3, and controlling the guide rail 5 to extend into the sliding groove 4 when the lifting bracket 3 is installed inside the movable pipe 2, the stability of the lifting bracket 3 during position adjustment is improved during the up and down movement of the lifting bracket 3 inside the movable pipe 2.
[0023] Please see Figure 2 The second limiting sleeve 12 is sleeved inside the first cover 7. At the same time, the two ends of the transmission rod 9 are diamond-shaped. The second limiting sleeve 12 and the first limiting sleeve 10 are clamped inside the first cover 7. The transmission rod 9 is set inside the first cover 7. At the same time, the two ends of the transmission rod 9 are diamond-shaped. After the first limiting sleeve 10 and the turbine 11 are sleeved on the two ends of the transmission rod 9, the second limiting sleeve 12 is controlled to limit the inside of the first cover 7. When the transmission rod 9 rotates, the transmission rod 9 drives the first limiting sleeve 10 and the turbine 11 to rotate synchronously.
[0024] Please see Figure 3The straight teeth 6 extend into the interior of the first cover 7, and the first cover 7 and the turbine 11 are connected to each other by a turbine. The straight teeth 6 extend into the interior of the first cover 7, and at the same time control the first cover 7 to contact the turbine 11. When the transmission rod 9 drives the turbine 11 to rotate, the turbine 11 can drive the height of the lifting bracket 3 to be adjusted by the turbine motion principle.
[0025] Please see Figure 5 A gear is installed at the top of the first limiting sleeve 10, and a first steering gear 13 is meshed on one side of the gear. The first steering gear 13 is synchronously limited inside the first cover 7. A first steering gear 14 is vertically installed on the side of the first steering gear 13. The first steering gear 14 is connected to the first gear 15 installed inside the second cover 8. The first steering gear 13 and the first steering gear 14 are arranged between the first gear 15 and the first limiting sleeve 10. The first gear 15 can drive the first steering gear 14 to rotate synchronously. The first steering gear 14 drives the first steering gear 13 to rotate synchronously. The first steering gear 13 is meshed with the upper part of the first limiting sleeve 10. That is, during the rotation of the first gear 15, the first limiting sleeve 10 can be driven to rotate synchronously.
[0026] Please see Figure 5 The second gear 16 and the third gear 17 are installed on one side of the first gear 15 and the third gear 18, and the second gear 16 and the third gear 17 are meshed with the first gear 15 and the third gear 18 respectively. The diameter of the first gear 15 is larger than the diameter of the second gear 16, and the diameter of the third gear 17 is larger than the diameter of the third gear 18. The first gear 15 and the third gear 18 are disconnected in the middle. The first gear 15, the second gear 16, the third gear 17 and the third gear 18 are installed inside the second cover 8. When the rocker wheel 19 is rotated, the rocker wheel 19 drives the third gear 18 to rotate. The rocker wheel 19 drives the third gear 17 to rotate at a reduced speed. At the same time, the third gear 17 drives the second gear 16 to rotate synchronously. The second gear 16 further drives the first limit sleeve 10 to rotate, that is, the control transmission rod 9 is decelerated and rotated.
[0027] Please see Figure 1 The outside of the active pipe 2 is equipped with an adjustable scale marked with a "0" mark. By adjusting the position of the scale, it is possible to set any position as zero and record the actual rise and fall values.
[0028] Working Principle: In use, place the device base housing 1 below the part whose scribing height needs adjustment. Adjust the movable pipe 2 to just contact the part, and set the scale on the movable pipe 2 to the "0" mark. Turn the rocker wheel 19, driving the reduction gear installed inside the second housing 8. Simultaneously, with the assistance of the first steering gear 13 and 14, the first limiting sleeve 10 rotates. The first limiting sleeve 10 drives the transmission rod 9 to rotate, which in turn drives the worm gear 11. The worm gear 11 interacts with the straight teeth 6 installed on the side of the lifting bracket 3, causing the movable pipe 2 to move up and down within the housing 1, thus lifting the workpiece. Based on the actual adjustment requirements, observe the scale on the movable pipe 2 and continue turning the rocker wheel 19 until the desired height is achieved. Then stop the rocker wheel 19; the movable pipe 2 will remain in place due to the worm gear's self-locking function. Record the scale size on the worm gear 11 to determine the specific dimensions for adjusting the scribing height of the part. After the marking is completed, the rotary wheel 19 resets the height of the movable pipe 2, and the scale returns to zero.
[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A portable device for adjusting the height of scribing lines on parts, comprising a housing (1), wherein a movable pipe (2) is fixedly connected inside the housing (1), a lifting bracket (3) is movably sleeved inside the movable pipe (2), and a straight tooth (6) is fixedly connected to one side of the lifting bracket (3), characterized in that: The straight tooth (6) passes through the interior of one side of the movable pipe (2). A first cover (7) is fixedly connected to the side of the movable pipe (2). A second cover (8) is installed inside the first cover (7). A transmission rod (9) is movably sleeved inside the first cover (7). A turbine (11) and a second limiting sleeve (12) are installed at the top of the transmission rod (9). A first limiting sleeve (10) is sleeved on the outside of the lower end of the transmission rod (9). A first gear (15), a second gear (16), a third gear (17), and a third gear (18) are installed inside the second cover (8). A rocker wheel (19) is connected to the outside of the third gear (18). The rocker wheel (19) extends to the outside of the outer shell (1).
2. A portable device for adjusting the scribing height of parts according to claim 1, characterized in that: The lifting bracket (3) has a sliding groove (4) inside, and the movable pipe (2) is fixedly connected to a guide rail (5), which is sleeved inside the sliding groove (4).
3. A portable device for adjusting the scribing height of parts according to claim 1, characterized in that: The second limiting sleeve (12) is sleeved inside the first cover (7), and the two ends of the transmission rod (9) are rhomboid, and the second limiting sleeve (12) and the first limiting sleeve (10) are clamped on the inner side of the first cover (7).
4. A portable device for adjusting the scribing height of parts according to claim 1, characterized in that: The straight teeth (6) extend into the interior of the first housing (7), and the first housing (7) and the turbine (11) are connected to each other via a turbine.
5. A portable device for adjusting the scribing height of parts according to claim 1, characterized in that: A gear is installed at the top of the first limiting sleeve (10), and a first steering gear (13) is meshed on one side of the gear. The first steering gear (13) is synchronously limited by a device installed inside the first cover (7). A first steering gear (14) is installed vertically on the side of the first steering gear (13), and the first steering gear (14) is connected to the first gear (15) installed inside the second cover (8).
6. A portable device for adjusting the scribing height of parts according to claim 1, characterized in that: The second gear (16) and the third gear (17) are mounted on one side of the first gear (15) and the third gear (18), and the second gear (16) and the third gear (17) are meshed with the first gear (15) and the third gear (18) respectively. The diameter of the first gear (15) is larger than the diameter of the second gear (16), and the diameter of the third gear (17) is larger than the diameter of the third gear (18). The middle part of the first gear (15) and the third gear (18) is disconnected.
7. A portable device for adjusting the scribing height of parts according to claim 1, characterized in that: The movable pipe (2) is equipped with an adjustable scale marked with "0" on the outside.