A portable engineering surveying support

Abstract

The utility model relates to surveying and mapping support technical field especially relates to a portable engineering surveying and mapping support, it includes: support platform, fixedly connected in the below of support platform's connecting block, through each connecting block rotation connection in the below of support platform's support leg, sliding connection in each support leg lower part's sub support leg, fixedly connected on each sub support leg's rack, rotation connection on each support leg's rotation axis, rotation connection in each support leg's gear, the utility model discloses through setting up the transmission structure of gear and rack and the connection arm of retraction, realize the separation of the quick unfolding folding and height fine adjustment function of the utility model: in the coarse adjustment stage, the operator can slide sub support leg quickly, guarantees the operation efficiency, in the fine adjustment stage, through the rotation axis drive gear control sub support leg displacement, effectively improve the accuracy and stability of the utility model height setting, solve the technical problem that the existing support is difficult to control accurately, inconvenient operation when fine adjustment.

Description

Technical Field

[0001] This utility model relates to the field of surveying support technology, and in particular to a portable engineering surveying support. Background Technology

[0002] In the field of engineering surveying, portable supports are fundamental equipment for supporting precision measuring instruments such as total stations and levels. Their core function is to provide a stable and adjustable reference for the instruments, thereby ensuring the accuracy of measurement data. To meet the portability requirements of field operations, most existing mainstream surveying supports adopt a two-section sleeve structure. This design, with its inner and outer tubes overlapping each other, can be effectively retracted when not in use, significantly reducing the storage volume and facilitating transportation and carrying. Furthermore, during use, the height can be adjusted by sliding the sleeve, and then locked with bolts or other fasteners, achieving a balance between portability and height adjustment.

[0003] However, when adjusting the height of this type of structure, due to the usual fit gap between the sleeves, it is difficult for the operator to accurately control the sliding range during fine-tuning, which can easily lead to over-adjustment or under-adjustment, resulting in a large deviation in the height setting. Utility Model Content

[0004] In view of the above-mentioned defects in the prior art, this utility model provides a portable engineering surveying support that is easy to control precisely and has higher stability.

[0005] The technical solution of this utility model is as follows: a portable engineering surveying support, comprising: a support platform for mounting surveying equipment; three sets of connecting blocks fixedly connected to the bottom of the support platform; support legs rotatably connected to the bottom of the support platform via each connecting block; sub-legs slidably connected to the lower part of each support leg, the bottom of the sub-legs having a pointed needle structure; racks fixedly connected to each sub-leg, positioned inside the corresponding support leg; rotating shafts rotatably connected to each support leg, the ends of which protrude from the outer wall of the support leg; gears rotatably connected inside each support leg, meshing with the racks and fixedly coaxially with the rotating shafts; mounting shafts fixedly connected to the back of each rack; connecting arms rotatably connected to the racks via each mounting shaft, the support legs having reserved slots for accommodating the connecting arms, so that the outer wall of the connecting arms is flush with the outer wall of the support leg; magnetic blocks fixedly connected to the inner side of each connecting arm, so that the connecting arm can magnetically engage with the rack and remain in a retracted state; and fixing members provided on each support leg for fixing the relative position between the support leg and the sub-leg.

[0006] In one embodiment, the length of the connecting arm is shorter than the reserved slot.

[0007] In one embodiment, a slot is provided on the side wall of the support leg for installing a fastener; the fastener includes: a connecting shaft fixedly connected to the wall of each support leg; and a locking block rotatably connected to the support leg via each connecting shaft, which is composed of an integrally formed pressing part and a handle part, and the main structure of the pressing part is eccentrically located at the axis of the connecting shaft.

[0008] In one embodiment, the end of the rotating shaft is provided with friction grooves to increase operating friction.

[0009] In one embodiment, it further includes: a retaining ring fixedly connected to each support leg, the retaining ring having a semi-ring structure, which can engage with adjacent support legs to connect all support legs into one unit.

[0010] In one embodiment, it further includes: a deformation pad fixedly connected to the pressing part of each locking block.

[0011] Beneficial effects: This utility model achieves the separation of rapid unfolding and folding and height fine adjustment functions by setting a gear and rack transmission structure and a retractable connecting arm. In the coarse adjustment stage, the operator can quickly slide the sub-support legs to ensure operational efficiency. In the fine adjustment stage, the displacement of the sub-support legs is controlled by the rotating shaft driving the gear, which effectively improves the accuracy and stability of the height setting of this utility model and solves the technical problems of existing brackets being difficult to control accurately and inconvenient to operate during fine adjustment. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0013] Figure 2 This is a cross-sectional view of the connecting structure inside the support leg of this utility model.

[0014] Figure 3 This is a schematic diagram of the connection structure between the locking block and the sub-leg of this utility model.

[0015] Figure 4 This is a cross-sectional view showing the connection relationship between the connecting arm, the magnetic block, and the rack of this utility model.

[0016] Figure 5 This is a top view of the cross-sectional structure of the retaining ring and support leg of this utility model.

[0017] The markings in the diagram are: 1-support platform, 2-connecting block, 3-support leg, 4-rack, 5-sub-leg, 6-rotating shaft, 7-gear, 8-locking block, 9-connecting shaft, 10-connecting arm, 11-installation shaft, 12-reserved groove, 13-magnetic block, 14-clamping ring, 15-deformation pad, 16-friction pattern. Detailed Implementation

[0018] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0019] Example: A portable engineering surveying support, such as Figures 1-4 As shown, the system includes: a support platform 1 for mounting surveying equipment such as a total station or level; three sets of connecting blocks 2 fixedly installed below the support platform 1; support legs 3 rotatably mounted below the support platform 1 via each connecting block 2; sub-legs 5 slidably mounted on the lower part of each support leg 3, the two achieving the extension, retraction, and height adjustment of the support through relative displacement; the bottom of the sub-legs 5 adopts a pointed needle structure to enhance placement stability; a rack 4 fixedly mounted on each sub-leg 5, positioned inside the corresponding support leg 3; a rotating shaft 6 rotatably mounted on each support leg 3, its end protruding from the outer wall of the support leg 3; and a rotating shaft 6 rotatably mounted on each support leg 3. Gear 7 inside leg 3 meshes with rack 4 and is fixed coaxially with rotating shaft 6; mounting shaft 11 is fixedly installed on the back of each rack 4; connecting arm 10 is rotatably installed on rack 4 via each mounting shaft 11; a reserved slot 12 is provided on the support leg 3 for accommodating the connecting arm 10, so that the outer wall of the connecting arm 10 is flush with the outer wall of the support leg 3; the length of the connecting arm 10 is shorter than the reserved slot 12, making it easy for the operator to rotate it out; magnetic block 13 is fixedly installed on the inner side of each connecting arm 10, so that the connecting arm 10 can magnetically engage with rack 4 and maintain the stored state; fixing member provided on each support leg 3 is used to fix the relative position between support leg 3 and sub-support leg 5.

[0020] During use, when the bracket needs to be folded or unfolded, the connecting arm 10 is rotated out of the reserved slot 12 to overcome the magnetic force. Then, by pulling the connecting arm 10, the sub-leg 5 can be directly controlled to slide quickly along the support leg 3. During this process, the gear 7 rotates with the rack 4. After the operation is completed, the connecting arm 10 is reset and fixed in position by being attracted by the magnetic block 13. When fine-tuning the height is required, the rotating shaft 6 is rotated to drive the gear 7 to rotate, thereby precisely controlling the displacement of the rack 4 and the sub-leg 5 to achieve precise height adjustment.

[0021] This support structure, through the transmission mechanism of gear 7 and rack 4 and the retractable connecting arm 10, achieves the separation of rapid unfolding and folding and height fine adjustment functions: in the coarse adjustment stage, the operator can quickly slide the sub-support leg 5 to ensure operational efficiency; in the fine adjustment stage, the rotation shaft 6 drives the gear 7 to control the displacement of the sub-support leg 5, effectively improving the accuracy and stability of the height setting of this support, and solving the technical problems of existing supports being difficult to control precisely and inconvenient to operate during fine adjustment.

[0022] like Figures 1-3As shown, a slot is reserved on the side wall of the support leg 3 for installing a fastener; the fastener includes: a connecting shaft 9 fixedly installed on the wall of the support leg 3; and a locking block 8 rotatably installed on the support leg 3 via the connecting shaft 9, which is composed of an integrally formed pressing part and a handle part, and the main structure of the pressing part is eccentrically set at the axis of the connecting shaft 9.

[0023] When the handle is turned, the locking block 8 rotates around the connecting shaft 9, causing the eccentrically positioned pressing part to move toward the surface of the sub-support leg 5. By applying radial pressure, the static friction between the sub-support leg 5 and the support leg 3 is increased, thereby achieving rapid locking of the relative positions of the sub-support leg 5 and the support leg 3. The fixing structure of the fastener is easy to operate and responds quickly, effectively meeting the operational needs of frequent adjustments and immediate fixation in field surveying.

[0024] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the end of the rotating shaft 6 is provided with friction grooves 16 to increase the operating friction and improve the control accuracy of the rotation of the gear 7, thereby achieving more accurate height fine adjustment; it also includes: a retaining ring 14 fixedly installed on each support leg 3, the retaining ring 14 having a semi-ring structure, which can be engaged with adjacent support legs 3, so that all support legs 3 are connected as one unit, so as to facilitate storage and carrying; and a deformation pad 15 fixedly installed on the pressing part of each locking block 8, which is used to avoid damaging the surface when in contact with the sub-support leg 5, and enhances the fit and stability of the locking through its own deformation.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A portable engineering surveying support, characterized in that, include: A support platform (1) is used to mount surveying equipment; three sets of connecting blocks (2) are fixedly connected to the bottom of the support platform (1) and are evenly distributed on the support platform (1); a support leg (3) is rotatably connected to the bottom of the support platform (1) through each connecting block (2); a sub-leg (5) is slidably connected to the lower part of each support leg (3), and the bottom of the sub-leg (5) adopts a pointed needle structure; a rack (4) is fixedly connected to each sub-leg (5) and is located inside the corresponding support leg (3); a rotating shaft (6) is rotatably connected to each support leg (3), and its end protrudes from the outer wall of the support leg (3); a gear (7) is rotatably connected inside each support leg (3) and is connected to... The rack (4) is engaged and fixed coaxially with the rotating shaft (6); the mounting shaft (11) is fixedly connected to the back of each rack (4); the connecting arm (10) is rotatably connected to the rack (4) through each mounting shaft (11), and the support leg (3) is provided with a reserved groove (12) for the connecting arm (10) to be accommodated, so that the outer wall of the connecting arm (10) is flush with the outer wall of the support leg (3); the magnetic block (13) is fixedly connected to the inner side of each connecting arm (10), so that the connecting arm (10) can be magnetically attracted to the rack (4) and kept in the storage state; the fixing member provided on each support leg (3) is used to fix the relative position between the support leg (3) and the sub-support leg (5).

2. The portable engineering surveying support as described in claim 1, characterized in that, The length of the connecting arm (10) is shorter than that of the reserved slot (12).

3. The portable engineering surveying support as described in claim 1, characterized in that, The side wall of the support leg (3) has a pre-reserved slot for installing the fastener; the fastener includes: a connecting shaft (9) fixedly connected to the wall of each support leg (3); and a locking block (8) rotatably connected to the support leg (3) through each connecting shaft (9), which is composed of an integrally formed pressing part and a handle part, and the main structure of the pressing part is eccentrically set at the axis of the connecting shaft (9).

4. The portable engineering surveying support as described in claim 1, characterized in that, The end of the rotating shaft (6) is provided with friction grooves (16) to increase the operating friction.

5. A portable engineering surveying support as described in claim 1, characterized in that, Also includes: A retaining ring (14) is fixedly connected to each support leg (3). The retaining ring (14) has a semi-ring structure and can be engaged with the adjacent support leg (3) so that all support legs (3) are connected as one.

6. A portable engineering surveying support as described in claim 3, characterized in that, Also includes: Deformation pads (15) are fixedly connected to the pressing part of each locking block (8).

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