Tripod for building measurement

Abstract

The utility model discloses a tripod for building surveying, which comprises a bearing seat, a support rod component and a worm rotating shaft, the worm rotating shaft is rotatably mounted on the inner side of the bearing seat, three uniformly distributed sliding sleeve grooves are arranged on the surface of the bearing seat, the support rod component comprises a support rod, a foot rod and a rotating lug, and the rotating lug is sleeved in the sliding sleeve grooves in a sliding manner and is in meshing transmission with the surface of the worm rotating shaft; the supporting rods and the foot rods are of a sliding inserting structure, spring pins are arranged on the surfaces of the foot rods, and a plurality of positioning holes are formed in the surfaces of the supporting rods to achieve height adjustment. A spherical groove and a movably-installed floating ball are arranged on the top face of the bearing seat, a connector used for being connected with a measuring instrument is formed in the top of the floating ball, and an anti-skid cushion layer is arranged in the spherical groove to enhance the leveling stability. Synchronous unfolding and folding of the tripod assembly are achieved through the meshing structure between the worm rotating shaft and the rotating lug, the balance of angle adjustment and operation convenience are improved, and the adaptability and carrying convenience of the tripod in building surveying operation are enhanced.

Description

Technical Field

[0001] This utility model relates to the field of tripod technology, specifically a tripod for architectural surveying. Background Technology

[0002] With the increasing demands for measurement accuracy and efficiency in fields such as building construction, geological surveying, and road surveying, tripods, as the basic support device for surveying instruments, are widely used in the installation and fixation of equipment such as total stations, theodolites, and levels. A traditional building surveying tripod typically consists of a base and three independent, extendable struts. The bottom of the struts contacts the ground via feet, and the tops are connected to the surveying instrument via ball joints or threads to achieve stable fixation and leveling of the instrument.

[0003] The most common tripods on the market currently have the following typical structural features:

[0004] Each support leg is a separate component that is manually unfolded, usually using a hinged structure, and is pulled out one by one by the user to the desired angle;

[0005] Height adjustment relies on the sleeve structure and knob locking. The adjustment process mostly involves manually judging the length of each leg, and the positioning bolts often need to be manually tightened during positioning.

[0006] The leveling structure is mainly based on the ball head platform, and the level is adjusted by the fine-tuning nut on the instrument.

[0007] However, the aforementioned traditional structure has obvious technical limitations, mainly in the following aspects:

[0008] (1) The deployment of the outriggers relies on manual adjustment one by one, lacking a synchronous coordination mechanism. This makes it difficult to balance the angles between the three legs when the ground is uneven or there are height differences, which can easily lead to problems such as tilting of measuring instruments and low leveling efficiency.

[0009] (2) The height adjustment method of the strut is complicated. The traditional knob locking structure has poor stability and is easy to slide or cannot be accurately aligned during adjustment, which affects the safety and efficiency of the equipment in complex terrain in the field.

[0010] (3) Inconvenient to carry and fold. Some tripods are still quite large when folded, making them unsuitable for frequent movement or long-distance carrying, especially in field operations, which seriously affects the convenience of operation.

[0011] (4) The structure has a single function and lacks an automatic linkage mechanism, making it difficult to achieve coordinated adjustment of the strut angle and length, which affects the overall measurement efficiency and instrument stability.

[0012] In summary, existing architectural surveying tripods have varying degrees of shortcomings in terms of structural linkage, adjustment efficiency, leveling accuracy, and portability. There is an urgent need for an improved tripod structure that features simultaneous angle expansion, rapid height adjustment, precise leveling, and easy folding and carrying, to better meet the demands of current precision surveying operations. Therefore, this paper studies and improves upon existing solutions to provide an architectural surveying tripod. Utility Model Content

[0013] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0014] Therefore, the technical solution adopted by this utility model is as follows: a tripod for architectural surveying, comprising: a support, a support rod assembly, and a worm gear shaft rotatably mounted inside the support. The surface of the support has three evenly distributed sliding grooves. The support rod assembly includes a support rod, a foot rod, and a rotating lug fixed to one end of the support rod. The rotating lug is slidably fitted into the inner side of the sliding groove, and its surface meshes with the surface of the worm gear shaft for transmission. Sliding strips adapted to the inner side of the sliding groove are provided on both sides of the rotating lug. Through the meshing drive of the worm gear shaft and the rotating lug, the angle of the support rod assembly can be adjusted synchronously, ensuring the tripod's stable unfolding and folding.

[0015] In a preferred embodiment, the present invention can be further configured such that a float is movably mounted on the top surface of the support, the float being spherical, and the top surface of the float having an interface adapted to building surveying instruments.

[0016] The float structure allows for omnidirectional fine-tuning of the measuring instruments mounted on it, improving measurement accuracy and adaptability.

[0017] In a preferred embodiment, the present invention can be further configured such that: a spherical groove is provided on the top surface of the support, and the float is movably sleeved in the spherical groove; an anti-slip pad layer is provided inside the spherical groove to increase the friction of the float.

[0018] The anti-slip pad effectively improves the positioning stability of the float and prevents accidental slippage during use.

[0019] In a preferred embodiment, the present invention can be further configured such that: the rotating ear is arc-shaped, and the surface of the rotating ear is provided with worm gear teeth that mesh with the surface of the worm shaft for transmission.

[0020] The arc-shaped rotating lug and worm gear meshing transmission structure make the adjustment of the support leg angle smoother and more precise, and facilitates self-locking positioning.

[0021] In a preferred embodiment, the present invention can be further configured such that: the inner side of the support rod is provided with a sleeve groove adapted to the foot rod, and one end of the foot rod is slidably sleeved on the inner side of the support rod, and the other end of the foot rod is fixedly installed with a support foot.

[0022] The length of the foot pole can be adjusted through the sleeve groove structure to adapt to different terrains or measurement environments.

[0023] In a preferred embodiment, the present invention can be further configured such that: the surface of the support rod is provided with a plurality of evenly distributed positioning holes, and the surface of the foot rod is provided with spring pins for engaging with the positioning holes on the surface of the support rod to achieve length adjustment and positioning of the support rod and foot rod.

[0024] The tripod height can be quickly and accurately adjusted and fixed using the positioning holes and spring pin structure, improving efficiency and stability.

[0025] In a preferred embodiment, the present invention can be further configured such that: one end of the worm shaft is provided with a bushing, and the bushing is rotatably mounted on the inner side of the bearing seat; and the bottom end of the worm shaft is provided with a handle.

[0026] Users can manually control the rotation of the worm shaft via a throttle, thereby driving the strut assembly to extend or retract, making operation simple and intuitive.

[0027] The beneficial effects achieved by this utility model are as follows:

[0028] 1. In this utility model, the synchronous unfolding and retraction of the tripod assembly is achieved through the meshing transmission structure of the worm shaft and the worm gear on the lug, thereby quickly adjusting the balance. Compared with the traditional tripod that relies on manual adjustment, it has the advantages of strong structural linkage, high adjustment balance, and convenient operation.

[0029] 2. In this utility model, the sliding fit structure between the support rod and the foot rod, combined with the design of the spring pin and the positioning hole, makes the tripod height adjustment operation fast and efficient, and the positioning stable. It can adapt to various uneven ground environments, enhancing its practicality. At the same time, the use of foldable support rod components, combined with the worm gear drive design, allows the tripod to be quickly folded into a compact state, improving portability and making it suitable for various work scenarios such as on-site measurement and outdoor construction. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0031] Figure 2 This is a cross-sectional structural diagram of one embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of a strut assembly and structure according to an embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of a worm gear shaft structure according to an embodiment of the present invention.

[0034] Figure label:

[0035] 100, bearing seat; 110, sliding sleeve groove; 120, float ball; 200, strut assembly; 210, strut; 220, foot rod; 230, swivel lug; 221, support foot; 231, slide bar; 300, worm gear shaft. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0037] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0038] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing a tripod for architectural surveying.

[0039] Combination Figures 1-4 As shown, the present invention provides a tripod for architectural measurement, comprising: a support 100, a strut assembly 200, and a worm gear shaft 300, wherein the worm gear shaft 300 is rotatably mounted on the inner side of the support 100.

[0040] The surface of the support 100 is provided with three sliding grooves 110, which are evenly distributed along the circumference to provide a sliding installation structure for the strut assembly 200.

[0041] The strut assembly 200 includes a strut 210, a foot rod 220, and a rotating lug 230 fixed to one end of the strut 210. The rotating lug 230 is slidably fitted into the inner side of the sliding sleeve groove 110 and can slide or rotate along the direction of the groove. The surface of the rotating lug 230 is provided with a worm gear tooth structure, which meshes with the surface of the worm shaft 300 to achieve synchronous adjustment of the position of the strut assembly 200. Sliding strips 231 are also provided on both sides of the rotating lug 230, which are adapted to the inner wall of the sliding sleeve groove 110 to ensure guiding stability during sliding.

[0042] One end of the worm shaft 300 is provided with a bushing structure, through which the worm shaft 300 can be rotatably mounted on the inner side of the bearing 100. The bottom end of the worm shaft 300 is provided with a handle, which the user can rotate to drive the worm to rotate, thereby driving the rotating ear 230 to rotate, thus realizing the synchronous unfolding or retraction of the support rod assembly 200.

[0043] A float 120, a spherical structure, is mounted on the top surface of the support 100 and is embedded in a spherical groove on the support 100 at its bottom. An anti-slip pad is provided inside the spherical groove to increase the friction between the float 120 and the groove wall, thereby ensuring the float 120 remains stable during leveling. The top surface of the float 120 has a standard interface for connection to building surveying instruments, enabling rapid installation and leveling.

[0044] The inner side of the support rod 210 has a sleeve groove, and one end of the foot rod 220 can be slidably inserted into the sleeve groove to form a telescopic structure. The other end of the foot rod 220 is equipped with a support foot 221 for contacting the ground and improving stability. The surface of the support rod 210 has multiple positioning holes, and the surface of the foot rod 220 has spring pins, which can be elastically inserted into the positioning holes of the support rod 210 to complete the length adjustment and locking, thereby adapting to different ground heights or usage requirements.

[0045] With the above structural combination, when the user rotates the handle on the worm gear shaft 300 clockwise, the worm gear shaft drives the meshing lug 230 to rotate, thereby causing the support rod assembly 200 to unfold evenly around the support 100; rotating in the opposite direction allows the tripod to fold up, making it easy to carry and store. The user can also adjust the length of the legs 220 as needed, and achieve quick positioning through the engagement of spring pins and positioning holes, further improving the adaptability and stability of the tripod.

[0046] The float 120 provides a universal leveling function. After the measuring instrument is installed, precise leveling can be achieved by finely adjusting the position of the float, ensuring the accuracy of data measurement.

[0047] Through the above-mentioned structural design, this utility model achieves stable deployment and convenient adjustment of the tripod support structure, while also having a high-precision instrument leveling function, making it suitable for various building measurement scenarios.

[0048] Working principle and usage process of this utility model:

[0049] 1. Support Adjustment Principle: The three support rod assemblies 200 of the tripod are inserted into the evenly distributed sliding sleeve grooves 110 on the bearing 100 via rotating lugs 230. The worm gear teeth on the rotating lugs 230 mesh with the worm shaft 300. When the user rotates the handle at the bottom of the worm shaft 300, the worm rotates, driving the worm gear (i.e., the rotating lug) to rotate, thereby causing each support rod 210 to evenly expand or contract around the bearing, completing the synchronous adjustment of the tripod's support angle.

[0050] 2. Height Adjustment Principle: The support rod 210 and the foot rod 220 form a telescopic structure through a sleeve groove fit. The foot rod is equipped with a spring pin, and the surface of the support rod has positioning holes. Users can pull out the foot rod to different lengths as needed and engage the spring pin with the corresponding positioning hole to achieve multiple height adjustments for the tripod legs.

[0051] 3. Instrument Connection and Leveling Principle: The float 120 is installed in a spherical groove on the top surface of the support 100, with an interface on the top for mounting the measuring instrument. The float structure allows the instrument to be finely adjusted in all directions within the spherical groove, and the anti-slip pad layer enhances friction, achieving precise leveling and stable positioning of the measuring instrument.

[0052] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0053] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A tripod for architectural surveying, characterised in that, Include: The seat (100), the support rod assembly (200) and the worm shaft (300) are rotatably installed in the inner side of the seat (100), the surface of the seat (100) is provided with three evenly distributed sliding sleeve grooves (110), the support rod assembly (200) includes a support rod (210), a foot rod (220) and a rotating ear (230) fixed to one end of the support rod (210), the rotating ear (230) is slidingly sleeved in the inner side of the sliding sleeve groove (110), and the surface of the rotating ear (230) is engaged with the surface of the worm shaft (300) to drive, both sides of the rotating ear (230) are provided with sliding strips (231) matched with the inner side of the sliding sleeve groove (110).

2. A tripod for surveying, according to claim 1, characterised in that The top surface of the seat (100) movably installs a floating ball (120), the floating ball (120) is in a spherical shape, and the top surface of the floating ball (120) is provided with an interface matched with the building surveying instrument.

3. The tripod for building surveying according to claim 1, wherein The top surface of the seat (100) is provided with a spherical groove, and the floating ball (120) is movably sleeved in the spherical groove, and the inside of the spherical groove is provided with an anti-skid pad layer for increasing the movement friction of the floating ball (120).

4. The tripod for building surveying according to claim 1, wherein The rotating ear (230) is in an arc shape, and the surface of the rotating ear (230) is provided with worm gear teeth engaged with the surface of the worm shaft (300) to drive.

5. The tripod for building surveying according to claim 1, wherein The inner side of the support rod (210) is provided with a sleeve hole groove matched with the foot rod (220), and one end of the foot rod (220) is slidingly sleeved in the inner side of the support rod (210), and the other end of the foot rod (220) is fixedly installed with a foot (221).

6. The tripod for building surveying according to claim 1, wherein The surface of the support rod (210) is provided with a plurality of evenly distributed positioning holes, and the surface of the foot rod (220) is provided with a spring pin for engaging with the positioning holes on the surface of the support rod (210) to realize length adjustment and positioning of the support rod (210) and the foot rod (220).

7. The tripod for building surveying according to claim 1, wherein One end of the worm shaft (300) is provided with a shaft sleeve, and the shaft sleeve is rotatably installed in the inner side of the seat (100), and the bottom end of the worm shaft (300) is provided with a handle.

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