Folding frame for engineering surveying and mapping

Abstract

The utility model relates to the technical field of engineering surveying and mapping, in particular to a folding frame for engineering surveying and mapping. The folding frame for engineering surveying and mapping comprises a supporting table, rotating frames, a connecting block, a second screw rod, a motor, a third screw rod, a sliding block, a movable frame and a telescopic assembly, and the bottom of the supporting table is rotationally connected with the three rotating frames at equal-angle intervals in the circumferential direction. The motor drives the third screw rod to be matched with the movable frame, so that automatic unfolding and folding of the rotating frame can be quickly realized; when the motor breaks down, a second screw can be unscrewed to manually operate the rotating frame to flexibly deal with emergency situations, meanwhile, a handle rotationally connected to the outer side of the rotating frame is matched with a torsion spring, an acting point is provided during manual operation, automatic resetting is achieved after operation is completed, carrying of the folding frame is facilitated, the transportation space is effectively saved, and the portability of equipment is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to engineering surveying and mapping technical field especially relates to a folding stand for engineering surveying and mapping. BACKGROUND

[0002] In engineering surveying and mapping operation, the support device of surveying and mapping equipment plays a key role. The conventional folding stand for engineering surveying and mapping has many problems in practical application, especially in unfolding and folding operation.

[0003] Most of the folding stands in the prior art adopt manual unfolding and folding mode, which requires the operator to adjust and lock multiple support legs one by one, and the operation process is complicated, time-consuming and laborious. For example, when the surveying and mapping site needs to be quickly transferred in the field, frequent manual unfolding and folding of the folding stand will greatly reduce the work efficiency and affect the surveying and mapping progress. Moreover, manual operation is prone to errors, which may result in poor unfolding angle or stability of the folding stand, and further affect the accuracy of the surveying and mapping equipment.

[0004] Some folding stands that attempt to use automation technology, although improve the convenience of operation to some extent, often have problems such as complex structure and poor reliability. In addition, these automated folding stands usually lack effective emergency operation mechanism, and once the motor fails, the power is insufficient or the control system fails, the unfolding and folding actions cannot be normally completed, which makes the surveying and mapping work difficult. TECHNICAL CONTENT

[0005] In order to overcome the shortcomings mentioned in the background art, the technical problem of the utility model is to provide a folding stand for engineering surveying and mapping.

[0006] The technical implementation scheme of the utility model is: a folding stand for engineering surveying and mapping, comprising a support table, a rotating frame, a connecting block, a second screw, a motor, a third screw, a sliding block, a movable frame and an extension assembly, three rotating frames are rotationally connected to the support table at equal angles along the circumferential direction at the bottom, a recess is formed in the upper end of the rotating frame, a connecting block is clamped in the recess, a second screw is threadedly connected to one side of the connecting block, the end of the second screw abuts against the side wall of the recess, a motor is installed in the support table, a third screw is connected to the output shaft of the motor, a sliding block is threadedly connected to the third screw, three movable frames are rotationally connected to the sliding block at equal angles along the circumferential direction, the lower end of the movable frame is hingedly connected to the corresponding connecting block, and the rotating frame is provided with an extension assembly.

[0007] Optionally, the extension assembly comprises an extension leg and a first screw, the extension leg is slidingly connected in the rotating frame, and the first screw is threadedly connected to one side of the lower end of each rotating frame, the first screw penetrates through the inside of the rotating frame and abuts against the corresponding extension leg.

[0008] Optionally, the bottom end of the telescopic supporting leg is designed as a pointed cone structure made of high-strength alloy steel.

[0009] Optionally, the handle and the torsion spring are further included, the handle is rotatably connected to the outer side of the rotating frame, and the torsion spring is connected between the upper and lower ends of the handle and the rotating frame.

[0010] Optionally, in the initial state, the torsion spring is in the pre-tightening state, and the torsion moment generated thereby makes the handle tightly adhere to the outer side of the rotating frame.

[0011] Optionally, the connecting seat, the ball and the mounting table are further included, the connecting seat is connected to the top of the supporting table, the middle of the top of the connecting seat is provided with a spherical groove, the ball is in damping hinged cooperation with the spherical groove, the mounting table is provided with a spherical protrusion at the bottom, the spherical protrusion is in another damping hinged cooperation with the ball, and the two are connected.

[0012] Beneficial effects: 1. The third screw is driven by the motor to cooperate with the movable frame, so that the automatic unfolding and folding of the rotating frame can be realized quickly; when the motor fails, the second screw can be loosened to manually operate the rotating frame, unexpected conditions can be flexibly coped with, meanwhile, the handle rotatably connected to the outer side of the rotating frame cooperates with the torsion spring to provide a force point during manual operation, and the handle is automatically reset after operation, so that the folding frame is convenient to carry, transportation space is effectively saved, and the portability of the equipment is improved.

[0013] 2. The telescopic assembly on the rotating frame is designed in combination of the telescopic supporting leg and the first screw, the extension length of the telescopic supporting leg can be accurately adjusted by rotating the first screw, and the overall height of the folding frame can be flexibly adjusted.

[0014] 3. The connecting seat, the ball and the mounting table on the top of the supporting table constitute a damping hinged structure, so that the mounting table can be adjusted in a horizontal direction, the design can effectively adapt to different terrain conditions, ensures that the surveying equipment is always in a horizontal state, greatly reduces the surveying data error caused by uneven terrain, and significantly improves the accuracy and reliability of the surveying result. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a three-dimensional structure schematic view of the utility model.

[0016] Figure 2 It is a sectional view of the rotating frame component of the utility model.

[0017] Figure 3 It is a sectional view of the rotating frame component of the utility model.

[0018] Figure 4 It is a sectional view of the supporting table component of the utility model.

[0019] Figure 5This is a cross-sectional view of the connecting seat and mounting platform components of this utility model.

[0020] The meanings of the labels in the attached diagram are as follows: 1: support platform, 2: rotating frame, 3: handle, 4: torsion spring, 5: telescopic support leg, 6: first screw, 7: connecting block, 8: second screw, 9: motor, 10: third screw, 11: sliding block, 12: movable frame, 13: connecting seat, 14: sphere, 15: mounting platform. Detailed Implementation

[0021] Example: A folding frame for engineering surveying, such as Figures 1-4 As shown, the structure includes a support platform 1, a rotating frame 2, a connecting block 7, a second screw 8, a motor 9, a third screw 10, a sliding block 11, a movable frame 12, and a telescopic assembly. Three rotating frames 2 are rotatably connected at equal angular intervals along the circumferential direction at the bottom of the support platform 1, forming a foldable support structure base. A groove is provided at the upper end of each rotating frame 2, and a connecting block 7 is engaged in the groove. A second screw 8 is threadedly connected to one side of the connecting block 7, and the end of the second screw 8 abuts against the side wall of the groove. The thread preload is used to secure the connecting block 7 within the groove. A motor 9 is bolted into the support platform 1, and a third screw 10 is connected to the output shaft of the motor 9. A sliding block 11 is threadedly connected to the third screw 10. Three movable frames 12 are rotatably connected at equal angular intervals along the circumferential direction on the sliding block 11. The lower ends of the movable frames 12 are hinged to the corresponding connecting blocks 7. A telescopic assembly is provided on the rotating frame 2.

[0022] like Figures 1-2 As shown, the telescopic assembly includes telescopic legs 5 and a first screw 6. The telescopic legs 5 are slidably connected inside the rotating frame 2. The first screw 6 is threadedly connected to one side of the lower end of each rotating frame 2. The first screw 6 passes through the interior of the rotating frame 2 and abuts against the corresponding telescopic leg 5. By rotating the first screw 6, the axial force generated by the threaded transmission is used to press and fix the telescopic leg 5 in the required position, thereby locking the position of the telescopic leg 5. The bottom end of the telescopic leg 5 is designed with a pointed conical structure. This structure is made of high-strength alloy steel. During engineering surveying, the pointed conical bottom end can effectively penetrate the ground. By utilizing the shear strength and friction of the soil, the overturning resistance and stability of the folding frame are significantly enhanced.

[0023] In the engineering surveying operation, the surveying equipment is installed and fixed on the support table 1. The motor 9 is started, the output shaft of the motor 9 drives the third screw 10 to rotate, based on the screw transmission principle, the rotation of the third screw 10 is converted into the axial linear motion of the sliding block 11, the sliding block 11 is driven to move downward along the third screw 10, the sliding block 11 is hinged with the connecting block 7 through the movable frame 12, the linear motion of the sliding block 11 is converted into the rotary motion of the rotating frame 2, the connecting block 7 and the rotating frame 2 are pushed to rotate outward and expand around the support table 1, until the rotating frame 2 is expanded to the predetermined angle, at this time the motor 9 is closed, and the expansion operation of the folding frame is completed. According to the actual surveying requirement, the overall height of the folding frame can be adjusted by adjusting the telescopic assembly, in the specific operation, the first screw 6 is loosened, the locking of the telescopic supporting leg 5 is released, the telescopic supporting leg 5 can slide up and down in the rotating frame 2, after being adjusted to the appropriate height, the first screw 6 is tightened again, the telescopic supporting leg 5 is stably fixed by the thread pre-tightening force, since the three telescopic supporting legs 5 are distributed in a triangular shape, according to the triangular stability principle, the folding frame can be stably supported. At the same time, the bottom end of the sharp cone type telescopic supporting leg 5 is inserted into the ground, which further improves the stability of the folding frame under the complex terrain condition, when the folding frame needs to be folded, the motor 9 is controlled to operate reversely, the third screw 10 reversely rotates, the sliding block 11 is driven to move upward, the connecting block 7 and the rotating frame 2 are driven to rotate inward and fold by the movable frame 12, the folding of the folding frame is realized. When the motor 9 fails or the power is insufficient, the second screw 8 is loosened, the fastening constraint between the connecting block 7 and the groove of the rotating frame 2 is released, and the two are separated, at this time the rotating frame 2 can be manually and independently operated to expand or fold. After the motor 9 returns to normal operation, the connecting block 7 is inserted into the groove of the rotating frame 2 again, the connecting block 7 is fastened by the second screw 8, so that the folding frame returns to the working mode driven by the motor 9.

[0024] As shown in Figure 1 It also includes a handle 3 and a torsion spring 4, the handle 3 is rotatably connected to the outer side of the rotating frame 2, the handle 3 is connected with the rotating frame 2 through the torsion spring 4 at the upper and lower ends, in the initial state, the torsion spring 4 is in the pre-tightening state, the torsional moment generated by the torsion spring 4 makes the handle 3 tightly adhere to the outer side of the rotating frame 2, avoiding the handle 3 from shaking or interfering during the expansion or folding of the folding frame.

[0025] When the folding frame needs to be carried or the rotating frame 2 is manually operated to expand / fold, the operator can hold the handle 3 and exert an external force to make the handle 3 rotate and expand, at this time the torsion spring 4 is elastically deformed and stores elastic potential energy. After the handle 3 is expanded, its shape conforms to the ergonomic design, which is convenient for the operator to exert force and complete the carrying or manual operation of the folding frame. After the operation is completed, the handle 3 is loosened, the torsion spring 4 releases the elastic potential energy and drives the handle 3 to reversely rotate and reset to the initial position, realizing the automatic folding of the handle 3.

[0026] AsFigure 1 and Figure 5 As shown in FIG. 13, the support table 1 further comprises a connecting seat 13, a ball 14 and a mounting table 15. The connecting seat 13 is connected to the top of the support table 1 by bolts. A spherical recess is arranged in the middle of the top of the connecting seat 13. The ball 14 is in a damping hinged fit with the spherical recess. The mounting table 15 is provided with a spherical protrusion at the bottom. The spherical protrusion is in another damping hinged fit with the ball 14, realizing the connection of the two. The surveying equipment is fixed and mounted on the mounting table 15 by bolts or clamps and the like. Through the arrangement of the ball 14, the mounting table 15 can realize horizontal multi-directional inclination adjustment. Specifically, the mounting table 15 can realize pitch angle adjustment within ±15° around the ball 14, and can realize azimuth angle adjustment within 360° around the vertical axis. The friction torque provided by the damping hinged structure can ensure that the mounting table 15 remains stable after being adjusted to the required angle, without the need for additional locking devices. This design enables the folding frame to adapt to different terrain conditions. By adjusting the angle of the mounting table 15, the surveying equipment can be ensured to be in a horizontal state, effectively avoiding the surveying data error caused by uneven terrain, and improving the accuracy of the surveying result.

Claims

1. A folding frame for engineering surveying, characterised in that: The utility model provides a kind of supporting table, including rotating frame (2), connecting block (7), second screw rod (8), motor (9), third screw rod (10), sliding block (11), movable frame (12) and telescopic component, three rotating frames (2) are rotationally connected with equiangular interval along circumferential direction on the bottom of supporting table (1), recess is set in the upper end of rotating frame (2), connecting block (7) is clamped in the recess, second screw rod (8) is threadedly connected with one side of connecting block (7), and the end of second screw rod (8) is in abutment with the side wall of recess, motor (9) is installed in supporting table (1), third screw rod (10) is connected on the output shaft of motor (9), sliding block (11) is threadedly connected on third screw rod (10), three movable frames (12) are rotationally connected with equiangular interval along circumferential direction on sliding block (11), and movable frame (12) lower end is respectively hinged with corresponding connecting block (7), and rotating frame (2) is equipped with telescopic component.

2. The folding frame for engineering surveying according to claim 1, characterized in that: Telescopic component includes telescopic leg (5) and first screw rod (6), telescopic leg (5) is slidably connected in rotating frame (2), and first screw rod (6) is threadedly connected with one side of each rotating frame (2) lower end, and first screw rod (6) penetrates rotating frame (2) inside and is in abutment with corresponding telescopic leg (5).

3. The folding frame for engineering surveying according to claim 2, characterized in that: The bottom end of telescopic leg (5) is designed as sharp cone structure, which is made of high-strength alloy steel material.

4. The folding frame for engineering surveying according to claim 1, characterized in that: It also includes handle (3) and torsion spring (4), and handle (3) is rotationally connected on the outside of rotating frame (2), and torsion spring (4) is connected between the upper and lower ends of handle (3) and rotating frame (2).

5. The folding frame for engineering surveying according to claim 4, characterized in that: In initial state, torsion spring (4) is in pre-tightening state, and the torsional moment generated by torsion spring (4) makes handle (3) closely adhere to the outside of rotating frame (2).

6. The folding frame for engineering surveying according to claim 1, characterized in that: It also includes connecting seat (13), ball (14) and mounting table (15), connecting seat (13) is connected on the top of supporting table (1), spherical recess is arranged in the middle of the top of connecting seat (13), ball (14) and the spherical recess form damping type hinged cooperation, and spherical convex is arranged on the bottom of mounting table (15), the spherical convex and ball (14) form another damping type hinged cooperation, to realize the connection of both.

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