Level gauge vertical shaft for building construction
By employing a rolling bearing structure and a rotating wheel adjustment unit on the vertical axis of the level instrument, the problems of vertical axis wear and jamming were solved, achieving a high-precision and easy-to-maintain vertical axis design for the level instrument.
Patent Information
- Application Number
- CN202422819225.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-11-19
AI Technical Summary
The vertical axis of existing levels suffers wear and jamming due to sliding friction during long-term use, affecting measurement accuracy and service life.
The conventional sliding bearing is replaced by a rolling bearing structure. The upper and lower ends of the vertical shaft are connected to the upper and lower bearings respectively, and it is equipped with a wheel adjustment unit and a dust cover, which simplifies the structure, reduces wear, and facilitates maintenance.
It improves the operational accuracy and lifespan of the vertical axis of the level, reduces wear, ensures measurement accuracy, and facilitates maintenance.
Smart Images
Figure CN223499212U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vertical axis installation technology for level instruments, and in particular to a vertical axis for a level instrument used in building construction. Background Technology
[0002] A level is an instrument used to establish a horizontal line of sight and determine the height difference between two points on the ground. It can be applied to national earthquake leveling, building engineering surveying, deformation and settlement monitoring, mining surveying, etc. The principle is to measure the height difference between ground points based on the principle of leveling. The main components include a telescope, a tubular level (or compensator), a vertical axis, a base, and leveling screws. In a conventional vertical axis structure, the vertical axis and the upper base are in a sliding fit. The rotation of the vertical axis drives the level to work. In actual work, due to long-term sliding friction, wear will occur, and the vertical axis will jam, causing the level to malfunction. In view of this, a vertical axis for a level used in building construction is proposed to solve the above problems. Utility Model Content
[0003] To solve the technical problem of installing the vertical axis of a level instrument, this utility model provides a vertical axis for a level instrument used in building construction.
[0004] This utility model is achieved using the following technical solution: a vertical axis for a building construction level, comprising an upper base, a lower bearing fixedly connected to the inner side of the upper base, a vertical axis fixedly connected to the inner side of the lower bearing, an upper bearing fixedly connected to the upper end of the vertical axis, a mirror base adjusting shim fixedly connected to the outer side of the upper bearing, and an installation and fixing mechanism provided on the lower side of the upper base.
[0005] As a further improvement to the above solution, a leveling unit is fixedly connected to the upper side of the mirror mount adjustment shim.
[0006] As a further improvement to the above solution, the vertical shaft is fixedly connected to the inner side of the upper bearing, and the vertical shaft extends upward along the inner side of the upper bearing and is fixedly connected to the lower side of the mirror mount adjusting shim.
[0007] As a further improvement to the above solution, the mounting and fixing mechanism includes multiple rotating wheel adjustment units that are threadedly connected to the lower side of the upper base, and each rotating wheel adjustment unit has an auxiliary height adjustment wheel on its outer side.
[0008] As a further improvement to the above solution, a lower base is fixedly connected to the lower side of the multiple rotating wheel adjustment units, and the lower base is used to fix the connection with the bracket.
[0009] As a further improvement to the above solution, a dust cover is fixedly connected to the lower side of the upper base. The dust cover is located above the lower base. A gasket is provided between the dust cover and the lower end of the vertical shaft. A nut fixing assembly is provided between the gasket and the inner side of the dust cover.
[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0011] 1. This utility model simplifies the vertical axis structure system of the level by connecting the upper and lower bearings at the upper and lower ends of the vertical axis, which has the advantages of reducing wear and preventing shaft jamming.
[0012] 2. The vertical axis structure system of the level instrument of this utility model has many advantages, such as small radial clearance, high operating accuracy, easy sealing, and easy maintenance, because it uses bearings as the support frame. Attached Figure Description
[0013] Figure 1 A schematic diagram of the overall structure of the vertical axis of a construction level provided by this utility model;
[0014] Figure 2 for Figure 1 A partial structural diagram;
[0015] Figure 3 for Figure 1 A sectional view;
[0016] Figure 4 for Figure 3 A schematic diagram of the exploded structure;
[0017] Figure 5 for Figure 4 A bottom view.
[0018] Explanation of key symbols:
[0019] 1. Lower base; 2. Rotary wheel adjustment unit; 3. Mirror mount adjustment shim; 4. Leveling unit; 5. Upper base; 6. Dust cover; 7. Vertical axis; 8. Upper bearing; 9. Lower bearing. Detailed Implementation
[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0021] Example:
[0022] Please combine Figure 3 As shown, the vertical axis of a construction level in this embodiment includes an upper base 5. A lower bearing 9 is fixedly connected to the inner side of the upper base 5, that is, the outer ring of the lower bearing 9 is fixedly connected to the inside of the upper base 5. A vertical shaft 7 is fixedly connected to the inner side of the lower bearing 9, that is, the inner ring of the lower bearing 9 is fixedly connected to the vertical shaft 7. An upper bearing 8 is fixedly connected to the upper end of the vertical shaft 7. A mirror base adjusting shim 3 is fixedly connected to the outer side of the upper bearing 8. An installation and fixing mechanism is provided on the lower side of the upper base 5.
[0023] Please combine Figure 1 As shown, a leveling unit 4 is fixedly connected to the upper side of the mirror mount adjustment shim 3. The leveling unit 4 is equipped with a telescope, a tubular level, etc. During operation, the instrument is first roughly leveled with a circular level. Before each reading, the micro-tilt screw is used to tilt the coincident level in the vertical plane until the coincident level bubble is precisely centered and the line of sight is horizontal. The tubular level has a small division value and high sensitivity. The telescope has a large magnification and strong brightness. The instrument structure is robust, especially the connection between the telescope and the tubular level is firm. It is equipped with an optical micrometer and a precision leveling rod, which helps to improve the reading accuracy.
[0024] Please combine Figure 3 As shown, the vertical shaft 7 is fixedly connected to the inner side of the upper bearing 8. The vertical shaft 7 extends upward along the inner side of the upper bearing 8 and is fixedly connected to the lower side of the mirror base adjusting shim 3. It is fixedly connected to the leveling unit 4 above the mirror base adjusting shim 3. When it is necessary to adjust the rotation angle of the leveling unit 4 in the horizontal plane, the mirror base adjusting shim 3 can be rotated. An angle positioning device is provided on the side of the upper bearing 8 to position the adjusted angle.
[0025] Please combine Figure 5 As shown, the mounting and fixing mechanism includes three rotating adjustment units 2 that are threadedly connected to the lower side of the upper base 5. Each rotating adjustment unit 2 has an auxiliary height adjustment wheel on its outer side. The horizontal tilt of the upper base 5 can be finely adjusted by rotating the wheel.
[0026] Please combine Figure 2 As shown, the lower base 1 is fixedly connected to the lower side of the three rotating adjustment units 2. The lower base 1 is used to fix the connection with the bracket.
[0027] Please combine Figure 3 As shown, a dust cover 6 is fixedly connected to the lower side of the upper base 5. The dust cover 6 is located above the lower base 1. A gasket is provided between the dust cover 6 and the lower end of the vertical shaft 7. A nut fixing assembly is provided between the gasket and the inner side of the dust cover 6. By opening the dust cover 6, lubricating oil can be added to the two bearings on the vertical shaft 7, the upper bearing (8) and the lower bearing (9), to avoid the bearings from wearing down due to long-term use, which would reduce the bearing accuracy and thus affect the level measurement accuracy. At the same time, it is helpful for staff to disassemble the vertical shaft 7 during maintenance.
[0028] The innovation of this utility model is to change the conventional sliding bearing vertical shaft structure of the existing level instrument to a rolling bearing vertical shaft structure. Regardless of the type of level instrument vertical shaft structure, as long as it is changed to rolling friction and uses a rolling bearing, it falls within the scope of this claim.
[0029] The implementation principle of the vertical axis of a construction level in this embodiment is as follows: the level adjusts the horizontal tilt of the upper base 5 through the rotating wheel adjustment unit 2. When the leveling unit 4 is rotated, the lower bearing 9 at the lower end of the vertical axis 7 is supported by the lower bearing 9, and the upper bearing 8 at the upper end is supported by the upper bearing 8. Since the mirror base adjustment shim 3 is fixedly connected to the outer ring of the upper bearing 8, the function of adjusting the horizontal rotation angle of the leveling unit 4 is achieved.
[0030] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.
Claims
1. A vertical axis for a building construction level, comprising an upper base (5), characterized in that, The upper base (5) is fixedly connected to the inner side of a lower bearing (9), the lower bearing (9) is fixedly connected to the inner side of a vertical shaft (7), the upper end of the vertical shaft (7) is fixedly connected to an upper bearing (8), the outer side of the upper bearing (8) is fixedly connected to a mirror mount adjusting shim (3), and the lower side of the upper base (5) is provided with an installation and fixing mechanism.
2. The vertical axis of a building construction level as described in claim 1, characterized in that, The leveling unit (4) is fixedly connected to the upper side of the mirror mount adjustment shim (3).
3. The vertical axis of a building construction level as described in claim 1, characterized in that, The vertical shaft (7) is fixedly connected to the inner side of the upper bearing (8), and the vertical shaft (7) extends upward along the inner side of the upper bearing (8) and is fixedly connected to the lower side of the mirror base adjusting shim (3).
4. The vertical axis of a building construction level as described in claim 1, characterized in that, The mounting and fixing mechanism includes multiple rotating wheel adjustment units (2) that are threadedly connected to the lower side of the upper base (5), and each rotating wheel adjustment unit (2) has an auxiliary height adjustment wheel on its outer side.
5. The vertical axis of a construction level as described in claim 4, characterized in that, The lower sides of the multiple rotating wheel adjustment units (2) are fixedly connected to a lower base (1), which is used to fix the connection with the bracket.
6. The vertical axis of a building construction level as described in claim 1, characterized in that, A dust cover (6) is fixedly connected to the lower side of the upper base (5). The dust cover (6) is located above the lower base (1). A gasket is provided between the dust cover (6) and the lower end of the vertical shaft (7). A nut fixing assembly is provided between the gasket and the inner side of the dust cover (6).