Freezing hole depth measuring device

Abstract

The invention provides a freezing hole depth measuring device which comprises a runway, the runway is provided with a carrier plate capable of relatively moving in the radial direction of a freezing hole, and a measuring rope in the freezing hole can be lowered through a winch without traction force; the braking assembly is used for braking the winch when the measuring rope is lowered, and the connecting assembly is used for connecting the driving assembly and the winch, so that the driving assembly can provide traction force for the winch when the measuring rope is retracted; the detection piece is used for detecting whether the measuring rope placed in the freezing hole touches the bottom or not. When the measuring rope is lowered, the winch can independently rotate away from the driving device, lowering operation of the measuring rope in a freezing hole can be completed only through the gravity of the measuring rope, the stable lowering speed of the measuring rope is achieved in cooperation with the braking assembly, and an electromagnetic braking mode adopted by traditional measuring rope lowering is replaced; in addition, manual rope lifting measurement is changed into measurement of the depth of the freezing hole through change of rope tension data, labor intensity is reduced, and measurement is more accurate.

Description

Technical Field

[0001] This invention relates to the field of freezing hole detection technology, and more specifically to a freezing hole depth measuring device. Background Technology

[0002] The statements herein provide only background information in relation to this invention and do not necessarily constitute prior art.

[0003] With the exploitation of deep mineral resources and the development of vertical shaft freezing construction technology, the construction depth of vertical shaft freezing has gradually increased, which has increased the difficulty of measuring the depth of freezing holes. The accuracy of freezing hole depth measurement is ensured by increasing the weight of the measuring rope counterweight.

[0004] Traditional winches used for freezing hole depth measurement employ commercially available 1T electromagnetic brake winches. These winches have a winch speed of approximately 25m / min, resulting in slow working efficiency. Furthermore, the electromagnetic brake generates significant heat during prolonged operation, making it prone to damage. The measuring rope is also heavy, requiring high strength when lifting it for depth measurement. Consequently, freezing hole depth measurement is inefficient and labor-intensive. Summary of the Invention

[0005] The main objective of this invention is to provide a device for measuring the depth of frozen holes.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: a freezing hole depth measuring device includes a track set beside the ground of the freezing hole, a carrier plate that can move radially relative to the freezing hole is set on the track, a winch, a braking assembly, a connecting assembly, a driving device and a detection component are set on the top of the carrier plate, a measuring rope is wound on the winch, and the measuring rope in the freezing hole can be lowered by the winch without traction. The braking assembly is used to brake the winch when the measuring rope is lowered, and the connecting assembly is used to connect the drive assembly and the winch so that the drive assembly can provide traction force to the winch when the measuring rope is retrieved; the detection element is used to detect whether the measuring rope placed in the freezing hole has touched the bottom.

[0007] Furthermore, a bracket is provided on the top of the carrier plate, and a rotating shaft is inserted and fixed in the center of the winch. The two ends of the rotating shaft are respectively rotatably inserted into the corresponding frame wall of the bracket.

[0008] Furthermore, the drive device includes a traction motor mounted on the top of the carrier plate and a gearbox located at the output shaft of the traction motor. The gearbox is used to first reduce the speed of the output shaft of the traction motor and then drive the transmission shaft on it to rotate. The transmission shaft can cooperate with the connecting assembly to drive the winch to rotate when the measuring rope is retrieved.

[0009] Furthermore, the connecting assembly includes a turntable, which is concentrically fixed to one end of a rotating shaft. A pawl is provided on the surface of the turntable on the side away from the rotating shaft. A ratchet that engages with the pawl is concentrically fixed to one end of the drive shaft. A pushing component is provided on the turntable for pushing the pawl to connect it with the ratchet.

[0010] Furthermore, the pushing component includes a first fixed block disposed on the turntable, and a pressure rod that engages with a pawl is slidably inserted on the first fixed block.

[0011] Furthermore, the turntable is provided with a second fixed block, and the second fixed block is provided with a stop bar that can be inserted between the ratchet teeth.

[0012] Furthermore, the braking assembly includes a brake disc concentrically fixed to the other end of the rotating shaft, a first support arm is provided on the top of the carrier plate, a swing arm is rotatably provided on the top of the first support arm, a brake block is provided on the bottom side of the swing arm that contacts and rubs against the outer periphery of the brake disc, and a handle is provided on the end of the swing arm away from the first support arm.

[0013] Furthermore, a second support arm is rotatably provided on the bottom side of the swing arm away from the first support arm, and a telescopic rod is provided on the end of the second support arm away from the swing arm. A spring is sleeved on the outside of the telescopic rod, and the bottom of the telescopic rod is supported on the top of the carrier plate.

[0014] Furthermore, each of the four corners of the bottom of the carrier plate is equipped with a movable wheel with a wheel brake.

[0015] Furthermore, the testing component is a tension gauge, and a vertical plate is provided on the side of the runway away from the freezing hole. The two ends of the tension gauge are respectively fixed on the opposite side walls of the vertical plate and the carrier plate.

[0016] The beneficial effects of this invention are reflected in: The freezing hole depth measuring device of this invention is an improvement on the existing depth measuring winch. The components are readily available and inexpensive, requiring minimal investment and manpower. It also shortens the measurement time, improving efficiency. Specifically, during rope lowering, the winch 4 can rotate independently from the drive device, utilizing only the rope's own weight to lower it into the freezing hole. A braking assembly ensures a smooth rope lowering speed, replacing the traditional electromagnetic braking method and avoiding overheating and damage caused by prolonged energization. Furthermore, it replaces manual rope lifting with measuring the freezing hole depth through changes in rope tension, reducing labor intensity and increasing accuracy. Attached Figure Description

[0017] In the attached diagram: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1A schematic diagram of the intermediate connecting component in the connected state; Figure 3 for Figure 2 A schematic diagram of the intermediate connection component in a non-connected state; Figure 4 for Figure 1 Schematic diagram of the middle runway; Figure 5 for Figure 1 A schematic diagram of the overall structure from another perspective; Figure 6 for Figure 5 Enlarged structural diagram at point A in the middle.

[0018] Explanation of reference numerals in the attached figures: 1. Runway; 2. Carrier plate; 3. Support frame; 4. Winch; 5. Traction motor; 6. Gearbox; 7. Vertical plate; 8. Force gauge; 9. Shaft; 10. Turntable; 11. Pawl; 12. Drive shaft; 13. Ratchet; 14. First stationary block; 15. Pressure bar; 16. Second stationary block; 17. Stop bar; 18. Brake disc; 19. First support arm; 20. Swing arm; 21. Brake block; 22. Handle; 23. Second support arm; 24. Telescopic bar. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the invention, and not all of them. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0020] Please combine Figures 1 to 6 .

[0021] The freezing hole depth measuring device includes a runway 1 set next to the ground of the freezing hole. A carrier plate 2 that can move radially relative to the freezing hole is set on the runway 1. A winch 4, a braking assembly, a connecting assembly, a driving device and a detection component are set on the top of the carrier plate 2. A measuring rope is wound on the winch 4. The measuring rope in the freezing hole can be lowered without traction force by the winch 4.

[0022] The braking assembly is used to brake the winch 4 when the measuring rope is lowered. The connecting assembly is used to connect the drive assembly to the winch 4, enabling the drive assembly to provide traction to the winch 4 when the measuring rope is retrieved. The detection element is used to detect whether the measuring rope lowered into the freezing hole has touched the bottom.

[0023] In practice, before use, the track 1 is fixed on the ground next to the opening of the freezing hole to be tested, and the carrier plate 2 is placed on the track 1, ensuring that the carrier plate 2 can move radially relative to the freezing hole within the track 1. During use, the measuring rope is inserted into the freezing hole, and the rope is lowered into the hole using its own weight or by manually rotating the winch 4. During this process, the winch 4 can be braked using a braking component to ensure a stable rope release speed. When the measuring rope reaches the bottom of the freezing hole, it will be detected by the detection device, allowing the tester to obtain the freezing hole depth data. After testing, the winch 4 is rotated manually or using a drive device in conjunction with the connecting component to retrieve the measuring rope.

[0024] The advantages of this design are that it allows for improvements to existing depth sounding winches, parts are readily available and inexpensive, resulting in low upgrade costs. It also requires fewer personnel, shortens measurement time, and improves efficiency. Specifically, during rope lowering, the winch 4 can rotate independently from the drive unit, utilizing only the rope's own weight to lower it into the frozen hole. A braking assembly ensures a smooth lowering speed, replacing the traditional electromagnetic braking method and avoiding overheating and damage caused by prolonged energization. Furthermore, it replaces manual rope lifting with measuring the frozen hole depth through changes in rope tension, reducing labor intensity and improving measurement accuracy.

[0025] In one embodiment, a support 3 is provided on the top of the carrier plate 2, and a rotating shaft 9 is inserted and fixed in the center of the winch 4. The two ends of the rotating shaft 9 are respectively rotatably inserted into the corresponding frame wall of the support 3.

[0026] Thus, the winch 4 can lower or retrieve the measuring rope on the carrier plate 2 via the bracket 3.

[0027] In one embodiment, the drive device includes a traction motor 5 mounted on the top of the carrier plate 2 and a gearbox 6 located at the output shaft of the traction motor 5. The gearbox 6 is used to first reduce the speed of the output shaft of the traction motor 5 and then drive the transmission shaft 12 on it to rotate. The transmission shaft 12 can cooperate with the connecting assembly to drive the winch 4 to rotate when the measuring rope is retrieved.

[0028] Thus, the output shaft of the traction motor 5 and the gearbox 6 can drive the rotation of the transmission shaft 12, and with the help of the connecting components, the winch 4 can be driven to rotate when the measuring rope is retrieved.

[0029] It should be noted that the main function of the gearbox 6 is to reduce the output speed transmitted from the traction motor 5 to the drive shaft 12, and since the gearbox 6 is prior art, this application will not elaborate on it further.

[0030] It should be added that the traction motor 5 can be the motor that is originally built into the winch. In this embodiment, the φ140mm winch that was originally built into the 1T electromagnetic brake winch is replaced with a φ219mm winch to improve the winch speed.

[0031] In one embodiment, the connecting component includes a turntable 10, which is concentrically fixed to one end of a rotating shaft 9. A pawl 11 is provided on the surface of the turntable 10 away from the rotating shaft 9. A ratchet 13 that cooperates with the pawl 11 is concentrically fixed to one end of a drive shaft 12. A pushing component is provided on the turntable 10 for pushing the pawl 11 to connect the pawl 11 with the ratchet 13.

[0032] Thus, by pushing the component, the pawl 11 can be moved towards the ratchet 13, causing the pawl 11 to engage with the teeth of the ratchet 13, making the drive shaft 12, ratchet 13, turntable 10 and rotating shaft 9 form a rotating whole. Then the traction motor 5 can provide traction force for the rotation of the winch 4 (rope winding operation). That is, by using a ratchet mechanism, the ratchet 13 is connected to the drive shaft 12 through the pawl 11 and rotates synchronously to realize the transmission of the winch 4 for rope lifting; in the separated state, the winch 4 can rotate independently for rope lowering and rope winding in the unloaded state.

[0033] It should be added that a scroll is inserted and fixed on the pawl 11, and a scroll hole is opened on the turntable 10. The scroll is inserted into the scroll hole, and a coil spring is sleeved on the outside of the scroll. The two ends of the coil spring are fixed to the outer wall of the scroll and the wall of the scroll hole, respectively. When the pushing component does not press the pawl 11, the pawl 11 does not contact the ratchet 13, and the coil spring is in a non-deformed state at this time.

[0034] In one embodiment, the pushing component includes a first fixed block 14 disposed on the turntable 10, and a pressure rod 15 that is slidably inserted on the first fixed block 14 and engages with the pawl 11.

[0035] Thus, by pushing the pressure rod 15, the pressure rod 15 contacts the pawl 11, causing the pawl 11 to deflect towards the ratchet 13 (the coil spring is in a compressed deformation state at this time).

[0036] In one embodiment, a second fixed block 16 is provided on the turntable 10, and a stop bar 17 capable of being inserted between the teeth of the ratchet 13 is provided on the second fixed block 16.

[0037] Thus, when it is necessary to prevent the winch 4 from rotating for an extended period, the stop bar 17 can be inserted between the teeth of the ratchet 13 to effectively limit the ratchet 13 and prevent it from rotating.

[0038] In one embodiment, the braking assembly includes a brake disc 18 concentrically fixed to the other end of the rotating shaft 9, a first support arm 19 is provided on the top of the carrier plate 2, a swing arm 20 is rotatably provided on the top of the first support arm 19, a brake block 21 is provided on the bottom side of the swing arm 20 that contacts and rubs against the outer periphery of the brake disc 18, and a handle 22 is provided on the end of the swing arm 20 away from the first support arm 19.

[0039] Thus, when the measuring rope is being lowered, the handle 22 can drive the swing arm 20 to rotate downward around the first support arm 19, so that the brake block 21 contacts and squeezes the friction brake disc 18 to reduce the rotation speed of the shaft 9 and the winch 4, avoid the lowering speed being too fast, and ensure that the lowering speed of the measuring rope is stable.

[0040] In one embodiment, a second support arm 23 is rotatably provided on the bottom side of the swing arm 20 away from the first support arm 19. A telescopic rod 24 is provided at the end of the second support arm 23 away from the swing arm 20. A spring is sleeved on the outside of the telescopic rod 24, and the bottom of the telescopic rod 24 is supported on the top of the carrier plate 2.

[0041] Thus, when the handle 22 drives the swing arm 20 to rotate downward around the first support arm 19, the telescopic rod 24 and the spring are compressed and deformed. This compression and deformation allows for release when the pressure on the handle 22 is released later, helping the brake block 21 to automatically disengage from the brake disc 18 and release the brake on the winch 4. In one embodiment, movable wheels with wheel brakes are installed at the four corners of the bottom of the carrier plate 2.

[0042] This allows the carrier plate 2 to be moved on the runway 1.

[0043] In one embodiment, the testing element may be a tension gauge 8. A vertical plate 7 is provided on the side of the runway 1 away from the freezing hole, and the two ends of the tension gauge 8 are respectively fixed on the opposite side walls of the vertical plate 7 and the carrier plate 2.

[0044] Thus, when the carrier plate 2 is pulled by the measuring rope lowered on the runway 1, the tension of the measuring rope during the depth measurement process can be fed back to the tension gauge 8. If the tension data suddenly decreases, it indicates that the measuring rope has been lowered to the bottom of the freezing hole, so as to accurately measure the depth of the freezing hole.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0046] It should be noted that if the embodiments of the invention involve directional indicators (such as up and down), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0047] Furthermore, the meaning of "and / or" throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that satisfies both A and B. Additionally, if the embodiments of the invention involve descriptions such as "first," "second," etc., these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" can explicitly or implicitly include at least one of those features. Furthermore, "multiple" refers to two or more. Moreover, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by the invention.

Claims

1. A freezing hole depth measuring device, characterized in that, It includes a runway (1) set next to the ground of the freezing hole, a carrier plate (2) that can move radially relative to the freezing hole is set on the runway (1), a winch (4), a braking assembly, a connecting assembly, a driving device and a detection component are set on the top of the carrier plate (2), a measuring rope is wound on the winch (4), and the measuring rope in the freezing hole can be lowered without traction force through the winch (4); The braking assembly is used to brake the winch (4) when the measuring rope is lowered, and the connecting assembly is used to connect the drive assembly and the winch (4) so ​​that the drive assembly can provide traction force to the winch (4) when the measuring rope is retrieved; the detection element is used to detect whether the measuring rope placed in the freezing hole touches the bottom.

2. The freezing hole depth measuring device as described in claim 1, characterized in that, The top of the carrier plate (2) is provided with a bracket (3), and a rotating shaft (9) is inserted and fixed in the center of the winch (4). The two ends of the rotating shaft (9) are respectively inserted into the corresponding frame wall of the bracket (3).

3. The freezing hole depth measuring device as described in claim 2, characterized in that, The drive device includes a traction motor (5) mounted on the top of the carrier plate (2) and a gearbox (6) located at the output shaft of the traction motor (5). The gearbox (6) is used to first reduce the speed of the output shaft of the traction motor (5) and then drive the transmission shaft (12) on it to rotate. The transmission shaft (12) can cooperate with the connecting assembly to drive the winch (4) to rotate when the measuring rope is retrieved.

4. The freezing hole depth measuring device as described in claim 3, characterized in that, The connecting assembly includes a turntable (10), which is concentrically fixed at one end of a rotating shaft (9). A pawl (11) is provided on the turntable (10) on the side away from the rotating shaft (9). A ratchet (13) that cooperates with the pawl (11) is concentrically fixed at one end of a drive shaft (12). A pushing assembly is provided on the turntable (10) for pushing the pawl (11) to connect the pawl (11) with the ratchet (13).

5. The freezing hole depth measuring device as described in claim 4, characterized in that, The pushing component includes a first fixed block (14) disposed on a turntable (10), and a pressure rod (15) that engages with a pawl (11) is slidably inserted on the first fixed block (14).

6. The freezing hole depth measuring device as described in claim 4, characterized in that, The turntable (10) is provided with a second fixed block (16), and the second fixed block (16) is provided with a stop bar (17) that can be inserted between the teeth of the ratchet (13).

7. The freezing hole depth measuring device as described in claim 3, characterized in that, The braking assembly includes a brake disc (18) concentrically fixed at the other end of the rotating shaft (9), a first support arm (19) is provided on the top of the carrier plate (2), a swing arm (20) is rotatably provided on the top of the first support arm (19), a brake block (21) is provided on the bottom side of the swing arm (20) and it is in contact with the outer peripheral side of the brake disc (18) for frictional engagement, and a handle (22) is provided on the end of the swing arm (20) away from the first support arm (19).

8. The freezing hole depth measuring device as described in claim 7, characterized in that, The swing arm (20) is rotatably provided with a second support arm (23) away from the bottom side of the first support arm (19). A telescopic rod (24) is provided at the end of the second support arm (23) away from the swing arm (20). A spring is sleeved on the outside of the telescopic rod (24). The bottom of the telescopic rod (24) is supported on the top of the carrier plate (2).

9. The freezing hole depth measuring device as described in claim 1, characterized in that, The carrier plate (2) is equipped with movable wheels with wheel brakes at the four corners of its bottom.

10. The freezing hole depth measuring device as described in claim 1, characterized in that, The testing component is a tension gauge (8). A vertical plate (7) is provided on the side of the runway (1) away from the freezing hole. The two ends of the tension gauge (8) are fixed on the opposite side walls of the vertical plate (7) and the carrier plate (2), respectively.

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