Point fixing device

Abstract

The utility model relates to the technical field of land measuring instruments, and particularly discloses a point fixing device which comprises a carrier plate, a supporting rod connected to the carrier plate in a circumferential rotating mode and a prism module arranged on the top of the carrier plate. The supporting rod comprises a positioning rod rotationally connected with the carrying plate, a sliding rod slidably connected with the positioning rod and a control structure arranged at the top of the positioning rod and used for controlling the extending length of the sliding rod, a sliding groove allowing the sliding rod to slide therein is formed in the positioning rod, and a pedal is fixedly connected to the inner side of the bottom end of the sliding rod. In the prior art, a user needs to adjust a support rod for multiple times to position the height of a prism module, and needs to lower the body for multiple times, resulting in great fatigue strength of the user.

Description

Technical Field

[0001] This application relates to the technical field of land surveying instruments, and specifically discloses a fixed-point device. Background Art

[0002] When conducting land surveying operations or engineering surveys, a total station is used for fixed-point measurement and marking. Usually, the total station is used in conjunction with a fixed-point device. The fixed-point device can receive the laser beam emitted by the total station and reflect the laser back to the total station, thereby positioning the measured position and realizing distance measurement and azimuth measurement.

[0003] In the prior art, the fixed-point device consists of a support frame and a prism module installed on the top of the support frame. The support frame is mostly triangular and has three rotatable and telescopic support rods respectively. During the measurement and positioning process, the support frame plays a role in supporting and height adjustment of the prism module. Usually, for height adjustment, it is adjusted by controlling the telescopic movement of the support rods. People need to bend down, pull out or push in the bottom of the support rods, and fix them with bolts screwed into the support rods.

[0004] For a fixed-point device that requires fine adjustment, the user needs to adjust the height of the support rods multiple times, resulting in a large fatigue intensity.

[0005] Therefore, in view of this, the inventor provides a fixed-point device to solve the above problems. Summary of the Utility Model

[0006] The purpose of the present utility model is to solve the problem that in the use process of the traditional fixed-point device, the user needs to adjust the support rods multiple times to position the height of the prism module, and the user needs to bend down multiple times, resulting in a large fatigue intensity for the user.

[0007] To achieve the above purpose, the basic solution of the present utility model provides a fixed-point device. The present utility model relates to the technical field of land surveying instruments, and specifically discloses a fixed-point device, which includes a carrier plate, a support rod circumferentially and rotatably connected to the carrier plate, and a prism module provided on the top of the carrier plate. The support rod includes a positioning rod rotatably connected to the carrier plate, a sliding rod slidably connected to the positioning rod, and a control structure provided at the top of the positioning rod for controlling the extending length of the sliding rod. A sliding groove for the sliding rod to slide therein is formed on the positioning rod. A pedal is fixedly connected to the inner side of the bottom end of the sliding rod, solving the problem that in the use process of the traditional fixed-point device, the user needs to adjust the support rods multiple times to position the height of the prism module, and the user needs to bend down multiple times, resulting in a large fatigue intensity for the user.

[0008] Further, a plurality of rotating grooves are circumferentially formed on the carrier plate, and rotating rods are provided on both inner walls of the rotating grooves. Rotating holes for the rotating rods to rotate therein are respectively formed at both ends of the top of the positioning rod.

[0009] Furthermore, a prismatic protrusion is provided at the bottom of the slide rod.

[0010] Furthermore, the control structure includes a rotating shaft whose top end is rotatably connected to the top of the positioning rod and a positioning piece provided at the top of the positioning rod for fixing the rotating shaft. A guide groove is opened downward at the top of the sliding rod for the rotating shaft to slide inside, and a spiral groove is opened circumferentially on the outer wall of the rotating shaft. The inner wall of the sliding rod at the top of the guide groove is provided with a protrusion that slides in the spiral groove.

[0011] Furthermore, the positioning member includes a positioning slider that is circumferentially connected to the top of the positioning rod and slides circumferentially around the axis of the rotating shaft, and a positioning block that is detachably connected to the positioning slider. A positioning disc is fixed to the top of the rotating shaft, and a positioning slot is provided on the positioning disc for the positioning block to be inserted into. A bolt that can be screwed into the positioning slider and can be against the top surface of the positioning rod is screwed into the positioning slider.

[0012] Furthermore, a positioning ring platform is provided on the top of the positioning rod around the axis of the rotating shaft, and the positioning slider is provided with a clamping block sliding groove for the positioning ring platform to slide inside, and the bolt is against the top surface of the positioning ring platform.

[0013] Furthermore, the top of the positioning slider is provided with an insertion slot, one end of the positioning block is provided with an insertion key that can be inserted into the insertion slot, and the other end of the positioning block is provided with a positioning key that can be inserted into the positioning slot.

[0014] The principle and effect of this solution are:

[0015] Compared with the prior art, the support rod of the present invention is composed of a positioning rod and a sliding rod. The sliding rod slides relative to the positioning rod, the carrier plate and the prism module, and is fixed at a height by a control structure at the top of the positioning rod. When in use, when the user needs to pull out the sliding rod, the user presses the sliding rod downward with the pedal. The user does not need to bend down, and the pulled-out sliding rod can be fixed by the control structure at the top of the positioning rod.

[0016] When the user needs to push the sliding rod inward, he or she can use the instep of the foot to press against the pedal and lift the sliding rod upward to slide the sliding rod into the positioning rod. This solves the problem that during use of traditional positioning devices, the user needs to adjust the support rod multiple times to position the height of the prism module, and the user needs to lower the body multiple times, which causes high user fatigue. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For technical users in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1Shows a schematic diagram of a point finder proposed in an embodiment of the present application;

[0019] Figure 2 Shows a partial schematic diagram of a point finder proposed in an embodiment of the present application;

[0020] Figure 3 Shows a partial schematic diagram of a point finder proposed in an embodiment of the present application. Detailed implementation manners

[0021] To further elaborate on the technical means and effects adopted by the present utility model to achieve the predetermined utility model purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation manners, structures, features, and their effects according to the present utility model as follows.

[0022] The reference numerals in the accompanying drawings of the specification include: carrier plate 1, prism module 2, positioning rod 3, sliding rod 4, pedal 5, rotating shaft 6, spiral groove 7, convex block 8, positioning disc 9, positioning block 10, positioning slot 11, positioning ring platform 12, bolt 13, insertion slot 14.

[0023] A point finder, as shown in embodiments such as Figure 1 and Figure 2 shown:

[0024] Includes a disc-shaped carrier plate 1, three groups of support rods circumferentially installed on the carrier plate 1, and a prism module 2 installed on the top of the carrier plate 1. In this embodiment, the prism module 2 is the same as the prism module 2 commonly used in the prior art, and the connection relationship with the carrier plate 1 is the commonly used installation method in the prior art.

[0025] Three rotating grooves are circumferentially formed on the carrier plate 1, and rotating rods are integrally formed on the inner walls on both sides of the rotating grooves. The support rods include a positioning rod 3, a sliding rod 4, and a control structure installed on the top of the positioning rod 3 and used to control the extending length of the sliding rod 4. A sliding groove for the sliding rod 4 to slide therein is formed on the positioning rod 3, and a pedal 5 is integrally formed on the inner side of the bottom of the sliding rod 4. A rhombus protrusion is integrally formed on the bottom of the sliding rod 4 to reduce the supporting area with the bottom surface and facilitate positioning support on uneven roads. Rotating holes for the rotating rods to extend into and rotate inside are respectively formed at both ends of the top of the positioning rod 3.

[0026] The control structure includes a rotating shaft 6 and a positioning member. Specifically, the rotating shaft 6 is installed on the top of the positioning rod 3 and extends into the sliding groove, and the rotating shaft 6 can rotate. A guiding groove is formed downward from the top of the sliding rod 4, and the rotating shaft 6 extends into the guiding groove and can rotate and slide in the guiding groove. A continuous spiral groove 7 is circumferentially formed on the outer wall of the rotating shaft 6. As shown in Figure 3 shown, a convex block 8 that is inserted into the spiral groove 7 and slides in the spiral groove 7 is integrally formed on the inner wall of the sliding rod 4 at the top of the guiding groove.

[0027] The top of the positioning rod 3 is provided with a hole for the top of the rotating shaft 6 to extend out. The top of the positioning rod 3 is integrally formed with a positioning ring 12 around the axis of the rotating shaft 6. The positioning member includes a positioning slider mounted on the positioning ring 12 and sliding circumferentially around the axis of the rotating shaft 6, and a positioning block 10 mounted on the positioning slider. A positioning disc 9 is welded to the top of the rotating shaft 6, and a positioning slot 11 is formed on the positioning disc 9. And, as Figure 2 As shown, a clamping block slot is provided on the outer side of the positioning slider for the positioning ring stage 12 to slide inside, and a threaded hole is provided on the positioning slider above the clamping block slot, and a bolt 13 is screwed into the threaded hole. The bottom of the bolt 13 can be abutted against the top surface of the positioning ring stage 12, and when abutted, the position of the positioning slider and the positioning block 10 can be fixed.

[0028] In addition, an insertion slot 14 is opened on the top of the positioning slider. In this embodiment, one end of the positioning card block 10 is integrally formed with an insertion key that can be inserted into the insertion slot 14, and the other end of the positioning card block 10 is integrally formed with a positioning key that can be inserted into the positioning slot 11.

[0029] When the user wants to pull the slide bar 4 out, he pulls out the positioning block 10, loosens the bolt 13, and steps on the pedal 5 to press the slide bar 4 downward. The slide bar 4 slides down to drive the protrusion 8 to slide in the spiral groove 7 of the rotating shaft 6. Because the slide bar 4 cannot rotate, the cooperation of the protrusion 8 and the spiral groove 7 will drive the rotating shaft 6 to rotate. When the slide bar 4 reaches the appropriate position, the positioning slider is rotated around the positioning ring stage 12 and aligned with the positioning slot 11 at the top of the rotating shaft 6. Then, the bolt 13 is tightened, and the positioning block 10 can be clamped between the slot 14 and the positioning slot 11 to fix the angle of the rotating shaft 6. In this way, the height of the slide bar 4 is fixed, and the user does not need to bend down to pull the bottom of the slide bar 4 by hand to adjust the height. The height adjustment of the fixator can be completed by adjusting the control structure at the top of the positioning rod 3.

[0030] When the user needs to push the slide bar 4 inward, he or she can press the pedal 5 with the instep to lift the slide bar 4 upward, and then slide the slide bar 4 into the positioning rod 3, and then position it through the control structure;

[0031] After the height is determined, the laser beam emitted by the total station can be reflected by the prism module, thereby realizing the measurement and positioning of land and engineering.

[0032] The above are only the preferred embodiments of the present utility model, and do not impose any formal restrictions on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any user in the art, without departing from the scope of the technical solution of the present utility model, may make some changes or modifications to the above-disclosed technical content to obtain equivalent embodiments of equivalent changes. However, as long as it does not depart from the content of the technical solution of the present utility model, any brief modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A pointing device, characterized in that, It includes a carrier board, a support rod rotatably connected to the carrier board in the circumferential direction, and a prism module provided on the top of the carrier board. The support rod includes a positioning rod rotatably connected to the carrier board, a sliding rod slidably connected to the positioning rod, and a control structure provided at the top of the positioning rod and used to control the extending length of the sliding rod. A sliding groove for the sliding rod to slide therein is formed on the positioning rod, and a pedal is fixedly connected to the inner side of the bottom end of the sliding rod.

2. The locator according to claim 1, wherein A plurality of rotating grooves are formed in the circumferential direction of the carrier board, and rotating rods are provided on the inner walls of both sides of the rotating groove. Rotating holes for the rotating rods to rotate therein are respectively formed at both ends of the top of the positioning rod.

3. The positioning device according to claim 1, characterized in that, A rhombic protrusion is provided at the bottom of the sliding rod.

4. A positioning device according to claim 1, characterized in that, The control structure includes a rotating shaft rotatably connected to the top of the positioning rod at the top end and a positioning member provided on the top of the positioning rod for fixing the rotating shaft. A guiding groove for the rotating shaft to slide therein is formed downward at the top of the sliding rod. A spiral groove is formed in the circumferential direction of the outer wall of the rotating shaft, and a convex block that slides in the spiral groove is provided on the inner wall of the sliding rod at the top of the guiding groove.

5. The locator according to claim 4, characterized in that, The positioning member includes a positioning slider slidably connected to the top of the positioning rod in the circumferential direction around the axis of the rotating shaft and a positioning block detachably connected to the positioning slider. A positioning disc is fixedly connected to the top of the rotating shaft, and a positioning card slot for the positioning block to be inserted therein is formed on the positioning disc. A bolt that can abut against the top surface of the positioning rod is screwed into the positioning slider.

6. The locator according to claim 5, wherein, A positioning ring platform is provided at the top of the positioning rod around the axis of the rotating shaft. A clamping block sliding groove for the positioning ring platform to slide therein is formed on the positioning slider, and the bolt abuts against the top surface of the positioning ring platform.

7. A locator according to claim 5, characterized in that, A placement card slot is formed at the top of the positioning slider. A placement key that can be inserted into the placement card slot is provided at one end of the positioning block, and a positioning key that can be inserted into the positioning card slot is provided at the other end of the positioning block.

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