A fast positioning forced centering device

Abstract

The utility model discloses a forced centering device of quick positioning relates to engineering surveying and drawing equipment technical field. The utility model discloses a base, the base inner chamber slidingly connected with connecting rod, the base bottom is provided with locking assembly. The utility model locking assembly is driven through the screw rod and the thread transmission cooperation connecting rod of pull block, realizes the stable sliding of locking plate, and the accurate clamping of combination intercalation and intercalation forms double fixed restraint, and the locking positioning of connecting rod is more firm and reliable, effectively resists the vibration of field operation, wind power etc. External interference, avoid the loosening deviation after locking, guarantee the stability of the centering accuracy, and only need to rotate screw rod can drive locking assembly linkage, through the screw rod transmission, connecting rod traction drive locking plate stable sliding, complete accurate locking fast, whole installation process does not need complex tool and tedious step, and the operation is coherent and efficient, effectively reduces the installation time -consumption of field surveying and drawing operation.

Description

Technical Field

[0001] This utility model belongs to the technical field of engineering surveying equipment, and in particular relates to a forced centering device for rapid positioning. Background Technology

[0002] In the field of engineering surveying, forced alignment devices are core foundational equipment for ensuring the reliability of measurement data. Their role is involved in the entire surveying process of various projects such as highways, railways, bridges, buildings, water conservancy, and geological exploration. From topographic surveying and benchmark point establishment before construction, to accuracy control and deformation monitoring during construction, and finally to acceptance measurement after completion, all rely on them to achieve precise coupling between measuring instruments and benchmark points. Their core function is to achieve micron-level alignment between the measurement center of various measuring instruments such as total stations, GPS receivers, levels, and laser rangefinders and the physical center of benchmark points through the rigid constraints and precise guidance of mechanical structures. This minimizes the random errors caused by manual alignment and visual calibration, as well as systematic errors caused by instrument installation eccentricity and benchmark point offset, providing a stable and unified measurement benchmark for core operations such as angle measurement, distance measurement, and elevation transfer.

[0003] Chinese patent application CN212458388U discloses a forced centering device for engineering surveying, comprising a base and a mounting part, which are nested together. The upper end of the mounting part is provided with a stud adapted to a threaded hole on the lower end face of a measuring instrument. The base is used for fixed connection with an observation pier. This utility model provides a forced centering device for engineering surveying. The base is pre-embedded in the observation pier during concrete pouring. When measurement is required, the mounting part is first connected to the lower end face of the measuring instrument via the stud, and then the measuring instrument is fixed through the nested fit between the base and the mounting part. This avoids the influence of dust and impurities, resulting in high installation accuracy. Furthermore, the installation process does not require rotating the measuring instrument, saving effort and preventing misalignment and jamming of the measuring instrument base.

[0004] While this patent replaces the traditional exposed threaded hole with a nested connection structure between the base and the mounting part, thus preventing impurities from entering and affecting installation accuracy, and allowing assembly without rotating the measuring instrument, reducing problems such as misaligned threads and wear on the instrument base, this structure relies solely on the nested fit between the mounting column and the mounting groove and gravity for initial fixation. It lacks a dedicated quick-locking mechanism, requiring external tools for reinforcement to ensure stability, which is cumbersome and inefficient. Furthermore, in complex environments such as wind and ground vibration, the conical surface contact method is prone to slight loosening, leading to centering accuracy drift and insufficient long-term stability.

[0005] To address these issues, we provide a rapid positioning forced alignment device. Utility Model Content

[0006] The purpose of this invention is to provide a forced centering device for rapid positioning. By cooperating with the locking component and the guiding component, it solves the problems of low locking efficiency, poor stability, and difficulty in rapid positioning of the forced centering device in the prior art.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0008] This utility model relates to a rapid positioning forced centering device, comprising a base, a connecting rod slidably connected to the inner cavity of the base, and a locking assembly at the bottom of the base. The locking assembly includes a lead screw, one end of which is rotatably connected to the base via a bearing. A pull block is threaded onto the surface of the lead screw, and both ends of the pull block are rotatably connected to connecting rods. A locking plate is rotatably connected to the other end of the connecting rods, and both sides of the locking plate are slidably connected to the base. A slot is formed in the inner cavity of the connecting rod, and an insert plate is engaged in the inner cavity of the slot. The other side of the insert plate is fixedly connected to the locking plate. Both the insert plate and the slot are inclined on both sides. When inserted, the inclined surface guides the automatic calibration of the position, achieving precise docking without the need for repeated manual adjustment of the insertion angle. At the same time, the inclined surface has a larger contact area, forming a stable pre-positioning constraint after insertion. The locking plates are semi-circular and there are two of them, which makes the locking force evenly distributed on the surface of the connecting rod, avoiding excessive local force that could cause deformation or damage to the connecting rod. Moreover, the two semi-circular locking plates are symmetrically distributed, which can apply locking force simultaneously from both sides of the connecting rod, ensuring that the connecting rod is under balanced force and will not shift laterally due to locking on one side.

[0009] The present invention is further configured such that a guide assembly is provided in the inner cavity of the base, the guide assembly includes a guide groove located on the surface of the connecting rod, a guide wheel is provided in the inner cavity of the guide groove, both sides of the guide wheel are rotatably connected to the base, a guide block is slidably connected to the surface of the guide wheel, and the other side of the guide block is fixedly connected to the connecting rod. There are four guide blocks, which are arrayed on the four sides of the connecting rod, which can realize all-round offset correction. No matter which lateral direction the connecting rod deviates from when it is inserted, the guide block on the corresponding side will generate a guiding force along the inclined groove, automatically guiding the connecting rod to the center position. Compared with the non-arrayed guide structure, it covers more offset scenarios.

[0010] The present invention is further configured such that a knob is provided on one side of the base, and one side of the knob is fixedly connected to the lead screw. The knob can increase the contact area between the hand and the lead screw, making it easier for the operator to rotate the lead screw.

[0011] The present invention is further configured such that sliding rods are slidably connected to both sides of the locking plate, and both sides of the sliding rods are fixedly connected to the base. The sliding rods can limit the range of motion and operation mode of the locking plate, thereby improving its stability during operation.

[0012] The present invention is further configured such that mounting plates are fixedly connected to both sides of the bottom of the base, and one side of the mounting plate is fixedly connected to the slide rod. The mounting plate is used as a connecting part between the slide rod and the base, and can provide stable support for the slide rod.

[0013] The present invention is further configured such that there are multiple slots arranged in an array on the surface of the connecting rod. The arrangement of multiple slots can avoid locking failure caused by excessive force on a single slot.

[0014] The present invention is further configured such that a connecting plate is fixedly connected to the top of the connecting rod, and a leveling bolt is provided at the bottom of the connecting plate. The bottom of the leveling bolt is fixedly connected to the base. A level is detachably connected to the top of the connecting plate. The connecting plate is used as a connecting part between the instrument and the connecting rod, and can be used in conjunction with the bottom leveling bolt to adjust the horizontal angle of the instrument.

[0015] The present invention is further configured such that there are four leveling bolts, which are arranged in an array at the bottom of the connecting plate. Multiple leveling bolts can realize independent fine adjustment of the connecting plate in multiple directions. Whether there is a local height deviation of the connecting plate or insufficient flatness of the base mounting surface, it can be adjusted individually by the leveling bolts at the corresponding positions.

[0016] The present invention has the following beneficial effects.

[0017] 1. The locking assembly of this utility model achieves smooth sliding of the locking plate through the threaded transmission of the lead screw and the pull block, combined with the precise engagement of the insert plate and the slot, forming a double fixed constraint. This makes the locking and positioning of the connecting rod more secure and reliable, effectively resisting external interference such as vibration and wind during field operations, preventing loosening and displacement after locking, and ensuring the stability of the centering accuracy. Moreover, only rotating the lead screw is needed to drive the locking assembly to move together. Through lead screw transmission and connecting rod traction, the locking plate is driven to slide smoothly, quickly completing precise locking. The entire installation process does not require complicated tools or cumbersome steps, and the operation is smooth and efficient, effectively reducing the installation time of field surveying operations.

[0018] 2. The guide component of this utility model, through the matching design of the inclined guide groove and the guide block, can form an automatic centering force by means of the guide constraint of the inclined surface. When the connecting rod is inserted into the base, if there is a slight lateral offset, the guide block will slide along the inclined surface of the inclined guide groove and automatically correct the offset under the support force of the inclined surface. There is no need for repeated manual adjustment and alignment, which significantly improves the accuracy of centering and positioning, and at the same time reduces the difficulty of alignment caused by obstructed vision and limited operating space during field operations. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0020] Figure 1 A three-dimensional view of a forced centering device for rapid positioning.

[0021] Figure 2 A perspective view of the locking component in a forced centering device for rapid positioning.

[0022] Figure 3 This is an enlarged view of point A in a forced centering device for rapid positioning.

[0023] Figure 4 A three-dimensional view of a guide component in a forced centering device for rapid positioning.

[0024] Figure 5 This is an enlarged view of point B in a forced centering device for rapid positioning.

[0025] In the attached diagram: 1. Base; 2. Connecting rod; 3. Locking assembly; 301. Lead screw; 302. Pull block; 303. Connecting rod; 304. Locking plate; 305. Slot; 306. Insert plate; 4. Guide assembly; 401. Guide groove; 402. Guide wheel; 403. Guide block; 5. Knob; 6. Slide rod; 7. Mounting plate; 8. Connecting plate; 9. Leveling bolt; 10. Level. Detailed Implementation

[0026] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Please see Figure 1-5 This utility model is a forced centering device for rapid positioning, including a base 1, a connecting rod 2 slidably connected to the inner cavity of the base 1, a locking assembly 3 provided at the bottom of the base 1, the locking assembly 3 including a lead screw 301, one end of the lead screw 301 is rotatably connected to the base 1 through a bearing, a pull block 302 is threadedly connected to the surface of the lead screw 301, both ends of the pull block 302 are rotatably connected to a connecting rod 303, the other end of the connecting rod 303 is rotatably connected to a locking plate 304, both sides of the locking plate 304 are slidably connected to the base 1, a slot 305 is opened in the inner cavity of the connecting rod 2, an insert plate 306 is engaged in the inner cavity of the slot 305, and the other side of the insert plate 306 is fixedly connected to the locking plate 304.

[0028] Specifically: Both sides of the insertion plate 306 and the slot 305 are inclined. When inserted, the inclined surface can automatically calibrate the position with the help of the guiding effect of the inclined surface, so that the precise docking can be achieved without repeated manual adjustment of the insertion angle. At the same time, the contact area of ​​the inclined surface is larger, and a stable pre-positioning constraint can be formed after insertion. The locking plate 304 is semi-arc and there are two of them, so that the locking force is evenly distributed on the surface of the connecting rod 2, avoiding excessive local force that could cause deformation or damage to the connecting rod 2. Moreover, the two semi-arc locking plates 304 are symmetrically distributed, and the locking force can be applied simultaneously from both sides of the connecting rod 2 to ensure that the connecting rod 2 is under balanced force and will not be laterally offset due to locking on one side.

[0029] Please see Figure 1-5 The base 1 has a guide assembly 4 inside its cavity. The guide assembly 4 includes a guide groove 401 located on the surface of the connecting rod 2. A guide wheel 402 is provided inside the guide groove 401. Both sides of the guide wheel 402 are rotatably connected to the base 1. A guide block 403 is slidably connected to the surface of the guide wheel 402. The other side of the guide block 403 is fixedly connected to the connecting rod 2. A knob 5 is provided on one side of the base 1. One side of the knob 5 is fixedly connected to the lead screw 301. Slide rods 6 are slidably connected to both sides of the locking plate 304. Both sides of the slide rod 6 are fixedly connected to the base 1. Both sides of the bottom of the base 1 are fixedly connected to the mounting plate 7. One side of the mounting plate 7 is fixedly connected to the slide rod 6. There are multiple slots 305, which are arranged in an array on the surface of the connecting rod 2. The top of the connecting rod 2 is fixedly connected to the connecting plate 8. The bottom of the connecting plate 8 is provided with a leveling bolt 9, which is fixedly connected to the base 1. The top of the connecting plate 8 is detachably connected to a level 10. There are four leveling bolts 9, which are arranged in an array on the bottom of the connecting plate 8.

[0030] Specifically: There are four guide blocks 403, arranged in an array on all four sides of the connecting rod 2, enabling omnidirectional offset correction. Regardless of the lateral direction from which the connecting rod 2 deviates during insertion, the corresponding guide block 403 will generate a guiding force along the inclined groove, automatically guiding the connecting rod 2 to the center position. Compared to a non-arrayed guide structure, this covers more offset scenarios. The knob 5 increases the contact area between the hand and the lead screw 301, allowing the operator to rotate the lead screw 301 more easily. The slide bar 6 restricts the range of motion and operation mode of the locking plate 304. To improve operational stability, the mounting plate 7 serves as a connector between the slide rod 6 and the base 1, providing stable support for the slide rod 6. The multiple slots 305 prevent locking failure caused by excessive force on a single slot 305. The connecting plate 8 serves as a connector between the instrument and the connecting rod 2, and can be used with the bottom leveling bolts 9 to adjust the instrument's horizontal angle. Multiple leveling bolts 9 allow for independent fine-tuning of the connecting plate 8 in multiple directions. Whether there is a local height deviation in the connecting plate 8 or insufficient flatness of the mounting surface of the base 1, it can be adjusted individually by the leveling bolts 9 at the corresponding positions.

[0031] The working principle of this utility model is as follows: When in use, the connecting plate 8 is connected to the instrument, and the connecting rod 2 is inserted into the center of the base 1. The guide block 403 will slide along the inclined surface of the inclined guide groove 401. Under the support force of the inclined surface, the offset of the connecting rod 2 is automatically corrected, and automatic centering is achieved. The guide wheel 402 can reduce the friction between the two. Then, the level 10 is observed to determine whether there is a deviation in the level. The leveling bolt 9 can be adjusted to adjust the horizontal angle of the instrument. Finally, the knob 5 is turned. The knob 5 drives the pull block 302 to move through the lead screw 301. The pull block 302 pulls the locking plate 304 through the connecting rods 303 on both sides to lock the connecting rod 2. The locking plate 304 drives the insert plate 306 into the inner cavity of the slot 305 to complete the locking.

[0032] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A forced centering device for rapid positioning, comprising a base (1), characterized in that: The base (1) has a connecting rod (2) slidably connected to its inner cavity, and a locking assembly (3) is provided at the bottom of the base (1). The locking assembly (3) includes a lead screw (301), one end of which is rotatably connected to the base (1) via a bearing. A pull block (302) is threaded onto the surface of the lead screw (301). Both ends of the pull block (302) are rotatably connected to a connecting rod (303). The other end of the connecting rod (303) is rotatably connected to a locking plate (304). Both sides of the locking plate (304) are slidably connected to the base (1). The inner cavity of the connecting rod (2) is provided with a slot (305). An insert plate (306) is engaged in the inner cavity of the slot (305). The other side of the insert plate (306) is fixedly connected to the locking plate (304).

2. The forced alignment device for rapid positioning according to claim 1, characterized in that: The base (1) has a guide assembly (4) in its inner cavity. The guide assembly (4) includes a guide groove (401) located on the surface of the connecting rod (2). The guide groove (401) has a guide wheel (402) in its inner cavity. Both sides of the guide wheel (402) are rotatably connected to the base (1). A guide block (403) is slidably connected to the surface of the guide wheel (402). The other side of the guide block (403) is fixedly connected to the connecting rod (2).

3. The forced alignment device for rapid positioning according to claim 1, characterized in that: A knob (5) is provided on one side of the base (1), and one side of the knob (5) is fixedly connected to the lead screw (301).

4. The forced alignment device for rapid positioning according to claim 1, characterized in that: Both sides of the locking plate (304) are slidably connected to slide rods (6), and both sides of the slide rods (6) are fixedly connected to the base (1).

5. The forced alignment device for rapid positioning according to claim 4, characterized in that: The base (1) has mounting plates (7) fixedly connected to both sides of its bottom, and one side of the mounting plate (7) is fixedly connected to the slide rod (6).

6. The forced alignment device for rapid positioning according to claim 1, characterized in that: The number of slots (305) is multiple, and they are arranged in an array on the surface of the connecting rod (2).

7. The forced alignment device for rapid positioning according to claim 1, characterized in that: The top of the connecting rod (2) is fixedly connected to a connecting plate (8), and the bottom of the connecting plate (8) is provided with a leveling bolt (9). The bottom of the leveling bolt (9) is fixedly connected to the base (1), and the top of the connecting plate (8) is detachably connected to a level (10).

8. The forced alignment device for rapid positioning according to claim 7, characterized in that: The number of leveling bolts (9) is four, and they are arranged in an array at the bottom of the connecting plate (8).

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