Mine engineering surveying drop hammer

Abstract

A mine engineering surveying drop hammer comprises a drop hammer body, a placing frame, a positioning column and a plurality of balancing weights. The placement frame is detachably connected with the drop hammer, the positioning column is fixedly connected to the interior of the placement frame, a through hole penetrates through the center of the balancing weight, and the positioning column penetrates through the through hole of the balancing weight, so that the balancing weight can penetrate through the positioning column to be placed in the placement frame; a box cover is clamped to the top of the containing frame and provided with a rotating shaft. The device comprises a drop hammer, a positioning column, a placing frame and a balancing weight, a damping rod used for buffering is arranged in the drop hammer, a connecting plate is fixedly connected to the top of the damping rod, and springs used for resetting are fixedly connected to the two ends of the connecting plate. The weight of the drop hammer can be increased or reduced more conveniently according to actual conditions, so that the drop hammer is more stable in the falling process, shaking of the drop hammer is reduced, and workers can measure a mine conveniently.

Description

Technical Field

[0001] This utility model relates to the field of mine surveying, and in particular to a mine engineering surveying plumb bob. Background Technology

[0002] Mine surveying is the mapping work carried out during the construction and mining process for mine planning and design, exploration and construction, production and operation management, and mine decommissioning. The plumb bob is one of the indispensable tools in the inspection. The surveyor locates the suspended plumb line and prism in the observation mirror. The surveying personnel must illuminate the area at the front and back sight points. After the observer finds the target, a measurement is performed. If the error is within the allowable range, the measurement is moved to another station.

[0003] Chinese patent CN210719188U discloses a mining surveying plumb bob, including a telescopic device. A connecting device is fixedly welded to the right end of the telescopic device, and a retractable device is sleeved on the right end of the connecting device. A wire guide is fixedly welded to the upper end of the telescopic device, and a plumb bob is mounted on the wire guide and the retractable device. This invention controls the wire retraction and retraction by using the retractable device to control the length of the plumb bob, and uses the wire guide to guide the wire. Combined with the length adjustment structure of the telescopic device, this allows the plumb bob to be extended from a low position to a high position via the telescopic device for measuring objects at higher elevations, thus solving the problem of not being able to measure objects at higher elevations from a low position in a mine.

[0004] However, the present invention has the following problems in actual use: When the device is used by the staff, the weight of the hammer is fixed and it is not convenient to increase the weight according to the actual use needs. This makes it easy for the hammer to sway when it is placed down from a high position. In actual use, it is not convenient to protect the hammer. The impact force generated after the hammer falls is large and it is easy to damage the hammer. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the defects of the existing technology, which is that when the plumb bob is used by the workers, the weight is fixed and it is not convenient to increase the weight according to the actual use needs. This makes it easy for the plumb bob to sway when it is placed down from a high position, which is not convenient to protect the plumb bob. The impact force generated after the plumb bob falls is large and can easily damage the plumb bob. The present invention provides a plumb bob for mining engineering surveying.

[0006] The technical solution adopted by this utility model to solve its technical problem is a mining engineering surveying plumb bob, including a plumb bob, a placement frame, a positioning column, and multiple counterweights; the placement frame is detachably connected to the plumb bob, the positioning column is fixedly connected inside the placement frame, the center of each counterweight has a through hole, and the positioning column passes through the through hole of the counterweight so that the counterweight can pass through the positioning column and be placed inside the placement frame; a box cover is snapped onto the top of the placement frame, and the box cover is provided with a rotating shaft; a damping rod for buffering is provided inside the plumb bob, the top of the damping rod is fixedly connected to a connecting plate, and the two ends of the connecting plate are fixedly connected to springs for resetting.

[0007] Furthermore, a load-bearing buffer plate is snapped onto the top of the hammer, and a positioning hole for limiting movement is passed through the buffer plate.

[0008] Furthermore, the side of the placement rack has a viewing window for observation.

[0009] Furthermore, a protective shell is fixedly connected to the top of the box cover, and the rotating shaft is snapped into the inside of the protective shell.

[0010] Furthermore, one end of the rotating shaft is threaded with a nut for fastening, and the outer surface of the nut is provided with friction grooves for anti-slip.

[0011] Furthermore, a limiting plate for fixing is fixedly connected to the lower end of the spring, and one end of the limiting plate is fixedly connected to the inner wall of the hammer.

[0012] Furthermore, the top four corners of the placement rack have locking holes, and the box cover is provided with a limiting mechanism, the limiting mechanism being positioned corresponding to the locking holes.

[0013] Furthermore, the limiting mechanism includes a pin or a threaded post.

[0014] This utility model has the following beneficial technical effects:

[0015] By coordinating the plumb bob, positioning column, placement frame, and counterweight, workers can more easily adjust the weight of the plumb bob according to the actual situation when measuring the mine. This makes the plumb bob more stable during descent, reducing sway and facilitating mine measurements. This further enhances the practicality of the device. The positioning column also allows for easier positioning of the counterweight inside the placement frame, preventing swaying. The damping rod, connecting plate, and spring work together to absorb the impact of the plumb bob falling, protecting it and reducing potential damage. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of a surveying plumb bob for mining engineering according to this utility model;

[0017] Figure 2 This is a schematic diagram of the placement frame structure of an embodiment of a surveying plumb bob in mining engineering according to this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of a surveying plumb bob according to an embodiment of the present invention.

[0019] Figure 4 This is a schematic diagram of the damping rod structure of an embodiment of a mining engineering surveying plumb bob of the present invention;

[0020] Figure 5 This is a schematic diagram of the protective shell structure of an embodiment of a mining engineering surveying plumb bob of the present invention;

[0021] Figure 6 This is a schematic diagram of the pin structure of an embodiment of a surveying plumb bob for mining engineering according to this utility model;

[0022] Figure 7 This is a schematic diagram of the clamping plate structure of an embodiment of a surveying plumb bob for mining engineering according to this utility model;

[0023] Figure 8 This is a schematic diagram of the threaded column structure of an embodiment of a mining engineering surveying plumb bob of the present invention.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Plumb bob; 2. Placement rack; 3. Positioning post; 4. Counterweight; 5. Damping rod; 6. Connecting plate; 7. Spring; 8. Buffer plate; 9. Positioning hole; 10. Box cover; 11. Limiting mechanism; 12. Viewing window; 13. Protective shell; 14. Rotating shaft; 15. Nut; 16. Limiting plate; 17. Pin; 1101. Insert pin; 1102. Clamping plate; 1103. Threaded post. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0027] Reference Figure 1 , Figure 2 and Figure 3 This embodiment includes a hammer 1, a placement frame 2, a positioning column 3, and multiple counterweights 4. The placement frame 2 is bolted to the top of the hammer 1. The positioning column 3 and the counterweights 4 are both located inside the placement frame 2. The counterweights 4 have through holes, and the positioning column 3 passes through the through holes in the counterweights 4, so that the counterweights 4 can be stably placed inside the placement frame 2.

[0028] Specifically, the upper end of the placement rack 2 is fitted with a box cover 10 for sealing, and the lower end of the box cover 10 is fixedly connected with a limiting mechanism 11 for fastening. The side of the placement rack 2 is provided with a viewing window 12 for observation, and the upper end of the placement rack 2 is provided with a locking hole for limiting. The locking hole is located at the four corners of the top of the placement rack 2 or at the two side walls of the top. The limiting mechanism 11 is located on the box cover 10 and corresponds to the locking hole. The upper end of the box cover 10 is fixedly connected with a protective shell 13 for protection. The inside of the protective shell 13 is fitted with a rotating shaft 14 for storage. One end of the rotating shaft 14 is threaded with a nut 15 for fastening. The outer surface of the nut 15 is provided with friction texture for anti-slip. The inner wall of the placement rack 2 is fixedly connected with a positioning post 3 for limiting.

[0029] The lid 10 seals the rack 2 and limits the counterweight 4 inside the rack 2 to prevent it from falling. The limiting mechanism 11 makes the connection between the lid 10 and the rack 2 more secure and stable. The window 12 allows staff to easily check the number of counterweights 4 inside the rack 2. The protective shell 13 and the rotating shaft 14 make it easier to connect the rack 2 to the external wiring harness. The nut 15 fixes and limits the rotating shaft 14.

[0030] Reference Figures 2 to 5 The top of the hammer 1 is fitted with a load-bearing buffer plate 8. The upper end of the buffer plate 8 is provided with a positioning hole 9 for limiting the position. The lower end of the buffer plate 8 is inserted with a fastening pin 17. The pin 17 passes through one side of the buffer plate 8 and is inserted into the inside of the placement frame 2. The inner wall of the hammer 1 is fixedly connected with a damping rod 5 for buffering. With the cooperation of the buffer plate 8 and the pin 17, the hammer 1 can be connected to the placement frame 2 more conveniently, and the impact force borne by the upper end of the hammer 1 can be absorbed.

[0031] Reference Figures 1 to 6 The upper end of the damping rod 5 is fixedly connected to a connecting plate 6 for limiting the position, and the lower end of the connecting plate 6 is fixedly connected to a spring 7 for resetting. The lower end of the spring 7 is fixedly connected to a limiting plate 16 for fixing. The limiting plate 16 is fixedly connected to the hammer 1 on the side near the inner wall of the hammer 1. With the setting of the limiting plate 16, the spring 7 can be connected to the inner wall of the hammer 1. Through the setting of the spring 7, the impact force borne by the hammer 1 can be absorbed, thus protecting the hammer 1.

[0032] Reference Figure 6 In embodiment 1, the limiting mechanism 11 is a pin 1101. The four corners of the lower end of the box cover 10 are fixedly connected with the pins 1101 for fixing. With the help of the pins 1101, it is convenient for the staff to fix the box cover 10 to the upper end of the placement rack 2.

[0033] Reference Figure 7 In embodiment 2, the limiting mechanism 11 is a card plate 1102. The card plate 1102 for limiting is fixedly connected to the lower two sides of the box cover 10. With the help of the card plate 1102, the box cover 10 can be more firmly installed on the upper end of the placement rack 2.

[0034] Reference Figure 8 In embodiment 3, the limiting mechanism 11 is a threaded post 1103. The upper end of the box cover 10 is inserted with the threaded post 1103 for fastening. With the help of the threaded post 1103, it is convenient for the staff to disassemble the placement rack 2 and the box cover 10.

[0035] The implementation principle of the mining engineering surveying plumb bob 1 in this embodiment of the utility model is as follows:

[0036] First, the staff adds or removes the counterweight 4 inside the placement frame 2 according to the actual usage. Then, the external rope is clamped and wrapped around the outer surface of the rotating shaft 14. Second, when the staff is taking measurements, the plumb bob 1 is slowly lowered. The impact force experienced by the plumb bob 1 when it falls to the ground is absorbed by the damping rod 5 and the spring 7, which protects the plumb bob 1, reduces the impact force on the plumb bob 1, and extends the service life of the plumb bob 1.

[0037] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A mine surveying plumb bob, characterized in that, Including a plummet (1), a rack (2), a positioning column (3), a plurality of counterweights (4); the rack (2) is detachably connected with the plummet (1), the positioning column (3) is fixedly connected inside the rack (2), the center of the counterweight (4) is penetrated by a through hole, and the positioning column (3) penetrates the through hole of the counterweight (4), so that the counterweight (4) can be placed in the rack (2) through the positioning column (3); the top of the rack (2) is clamped with a box cover (10), the box cover (10) is provided with a rotating shaft (14); the inside of the plummet (1) is provided with a damping rod (5) for buffering, the top of the damping rod (5) is fixedly connected with a connecting plate (6), and the both ends of the connecting plate (6) are fixedly connected with springs (7) for resetting.

2. A mine surveying plumb bob according to claim 1, characterised in that, The top of the plummet (1) is clamped with a buffer plate (8) for bearing, and the buffer plate (8) is penetrated by a positioning hole (9) for limiting.

3. A mine surveying plumb bob according to claim 1, wherein, The side of the rack (2) has a window (12) for observation.

4. A mine surveying plumb bob according to claim 1, wherein, The top of the box cover (10) is fixedly connected with a protective shell (13), and the rotating shaft (14) is clamped in the inside of the protective shell (13).

5. A mine surveying plumb line according to claim 4, characterised in that, One end of the rotating shaft (14) is threadedly connected with a nut (15) for fastening, and the outer surface of the nut (15) is provided with friction lines for anti-skid.

6. A mine surveying plumb bob according to claim 1, wherein, The lower end of the spring (7) is fixedly connected with a limiting plate (16) for fixing, and one end of the limiting plate (16) is fixedly connected with the inner wall of the plummet (1).

7. A mine surveying plumb bob according to claim 1 wherein, The top of the rack (2) has clamping holes in four corners, the box cover (10) is provided with a limiting mechanism (11), and the limiting mechanism (11) corresponds to the positions of the clamping holes.

8. A mine surveying plumb line according to claim 7, characterised in that, The limiting mechanism (11) comprises a pin (17) or a threaded column (1103).

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