Rock soil sampler for hydraulic engineering detection

Abstract

The utility model is applicable to the technical field of rock-soil samplers, and provides a rock-soil sampler for hydraulic engineering detection, which comprises a sampler support, a lead screw, a servo motor, a driving gear and a power transmission mechanism, the lead screw is rotatably connected in the sampler support, the servo motor is fixed at the top of the sampler support, and the driving gear is fixed at the bottom of the sampler support. The driving gear is coaxially fixed to an output shaft of the servo motor, and the power transmission mechanism is arranged on the lead screw. According to the scheme, a worm in the power transmission mechanism drives a worm gear to be meshed and linked, a threaded rod is in threaded linkage, then a wedge-shaped block is driven to slide in a fixing base, an abutting rod and a limiting rod are synchronously pushed to deviate from each other, and then a driven gear and a gap eliminating gear can deflect to a certain degree; and the assembly clearance between the two gears and the driving gear is filled, and the impact load is dispersed and the stable transmission state is kept by virtue of the mutual synergistic effect of the two gears, so that the probability of tooth collision phenomenon is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of rock and soil sampler, especially relates to the rock and soil sampler for water conservancy project detection. BACKGROUND

[0002] In water conservancy construction, the accurate detection of rock and soil mechanics is the key prerequisite for dam foundation design, slope stability analysis and anti-seepage engineering, and the rock and soil sampler is the core equipment for obtaining in-situ rock and soil samples, and the performance directly affects the reliability of detection data, at present, the mainstream rock and soil sampler adopts mechanical driving mode to realize the drilling and extraction of the sampling pipe, wherein, the lead screw transmission is widely used in the depth control and power transmission system of the sampler due to high transmission accuracy, stable thrust and other characteristics.

[0003] In the related art, the driving system of the existing rock and soil sampler for water conservancy project usually adopts the transmission chain structure of "motor-gear set-lead screw", converts the high-speed rotation of the motor into the suitable rotating speed of the lead screw through the gear set, and realizes torque amplification; the lead screw nut pair converts the rotary motion into the linear motion of the sampling pipe, and completes the drilling, sampling or lifting action.

[0004] However, the gear set inevitably has a tooth side gap in the process of machining and assembling, that is, the gap between the non-working tooth surfaces of the gear pair, when the motor starts, reverses or the load suddenly changes, the tooth surfaces of the driving wheel and the driven wheel will impact due to the existence of the gap, and long-term operation easily leads to tooth wear and cracking, that is, the "gear tooth" phenomenon, for example, under the complex geological conditions of water conservancy engineering, such as pebble layer and fractured rock mass, the sampling resistance suddenly changes frequently, the gear impact is more intense, the risk of gear tooth is significantly increased, and the gear gap will cause "idle stroke" of the transmission chain, that is, when the motor rotates, the sampling pipe does not respond in time due to the gap, causing the position control accuracy to decrease, and for the high-precision sampling required in water conservancy engineering, the error may cause the sample depth positioning deviation, and affect the detection accuracy of the rock and soil mechanics parameters. CONTENT OF THE UTILITY MODEL

[0005] The utility model provides rock and soil sampler for water conservancy detection, aims at solving the problem that the current sampler exists gear tooth phenomenon when driving due to the existence of assembly gap when transmitting power through the gear set, and the position control accuracy decreases.

[0006] The utility model is realized as follows, the rock and soil sampler for water conservancy detection, include: sampler support, lead screw, servo motor, driving gear and power transmission mechanism, the lead screw rotation is connected in the sampler support, the servo motor is fixed at the top of sampler support, the driving gear is coaxially fixed on the output shaft of servo motor, the power transmission mechanism is arranged on the lead screw,

[0007] The power transmission mechanism comprises a driven gear, a gap elimination gear, a sliding groove, an abutting rod, a limiting rod, a fixing seat and a wedge-shaped block, the driven gear is coaxially fixed at the top end of the lead screw, the gap elimination gear is coaxially rotationally connected at the top of the driven gear, the sliding groove is arranged through the gap elimination gear, the abutting rod is fixed on the driven gear and passes through the sliding groove and is in sliding connection with the gap elimination gear.

[0008] The limiting rod is fixed on the gap elimination gear, the fixing seat is fixed at the top of the gap elimination gear and is provided with a rectangular notch on the fixing seat, the wedge-shaped block is slidingly connected in the rectangular notch of the fixing seat, and the abutting rod and the limiting rod are respectively slidingly abutted on the two sides of the wedge-shaped block.

[0009] Preferably, the power transmission mechanism further comprises a butt cylinder, a threaded rod and a worm gear, the butt cylinder is arranged in the fixing seat, one end of the threaded rod is fixed on the wedge-shaped block and the other end is slidingly butted in the butt cylinder, the worm gear is coaxially rotationally connected on the butt cylinder and is provided with a threaded hole at the axis of the worm gear, and the threaded rod is threadedly fitted in the threaded hole.

[0010] Preferably, an adjusting rod is rotationally connected in the fixing seat, one end of the adjusting rod is coaxially fixed with a worm, and the worm is in meshing with the worm gear.

[0011] Preferably, the other end of the adjusting rod is coaxially fixed with a positioning disc, the edge of the positioning disc is provided with a rectangular clamping groove, a protrusion is fixed on the outer wall of the fixing seat, a lock rod is slidingly connected on the protrusion, and one end of the lock rod is clamped in the rectangular clamping groove.

[0012] Preferably, a chuck is fixed on the lock rod and a return spring is sleeved on the outside of the lock rod, one end of the return spring is in abutment with the protrusion and the other end is in abutment with the chuck.

[0013] Preferably, the driving gear, the driven gear and the gap elimination gear are all of the helical tooth structure, the diameters of the driven gear and the gap elimination gear are the same and are greater than that of the driving gear.

[0014] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0015] In the scheme, the worm drives the worm gear meshing linkage in the power transmission mechanism, and makes the threaded rod thread linkage, and then drives the wedge block to slide in the fixed seat, and synchronously pushes the abutment rod and the limiting rod to be away from each other, and then makes the driven gear and the gap elimination gear can be deflected to a certain extent, fills the assembly gap between the two and the driving gear, and disperses the impact load by the mutual cooperation of the two gears, keeps the stable transmission state, greatly reduces the probability of the occurrence of the gear tooth phenomenon, improves the reliability of the equipment under complex working conditions, eliminates the assembly gap from the root, reduces the impact and wear between the gears, in the long-term water conservancy engineering rock soil sampling operation, the failure rate of the equipment is greatly reduced, the maintenance cycle is prolonged, which not only saves a lot of maintenance time and labor cost, but also improves the use efficiency of the equipment, and provides a powerful guarantee for the smooth development of water conservancy engineering detection work. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the sampler support and the overall structure schematic diagram of the utility model;

[0017] Figure 2 is the screw rod connecting structure schematic diagram of the utility model;

[0018] Figure 3 is the power transmission mechanism structure schematic diagram of the utility model;

[0019] Figure 4 is the wedge block connecting structure schematic diagram of the utility model;

[0020] Figure 5 is the adjusting rod and the connecting structure schematic diagram thereof of the utility model;

[0021] In the drawing: 1, sampler support; 2, screw rod; 3, servo motor; 4, driving gear; 5, power transmission mechanism; 51, driven gear; 52, gap elimination gear; 53, sliding groove; 54, abutment rod; 55, limiting rod; 56, fixed seat; 57, wedge block; 58, butt joint cylinder; 59, threaded rod; 510, worm gear; 511, worm; 6, adjusting rod; 7, positioning disc; 8, protruding block; 9, locking rod; 10, chuck; 11, return spring. DETAILED DESCRIPTION

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0023] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0024] The present invention provides a rock and soil sampler for water conservancy project detection, such as Figures 1-5 As shown, it includes: a sampler bracket 1, a screw 2, a servo motor 3, a driving gear 4 and a power transmission mechanism 5, the screw 2 is rotatably connected to the sampler bracket 1, the servo motor 3 is fixed to the top of the sampler bracket 1, the driving gear 4 is coaxially fixed to the output shaft of the servo motor 3, and the power transmission mechanism 5 is provided on the screw 2;

[0025] The power transmission mechanism 5 includes a driven gear 51, a backlash elimination gear 52, a chute 53, an abutting rod 54, a limiting rod 55, a fixing seat 56, and a wedge block 57. The driven gear 51 is coaxially fixed to the top of the lead screw 2. The backlash elimination gear 52 is coaxially connected to the top of the driven gear 51. The chute 53 is provided through the backlash elimination gear 52. The abutting rod 54 is fixed to the driven gear 51, passes through the chute 53, and is slidably connected to the backlash elimination gear 52.

[0026] The limiting rod 55 is fixed to the gap elimination gear 52, and the fixing seat 56 is fixed to the top of the gap elimination gear 52. A rectangular notch is opened on the fixing seat 56, and the wedge block 57 is slidably engaged in the rectangular notch of the fixing seat 56. The abutting rod 54 and the limiting rod 55 are respectively slidably engaged on both sides of the wedge block 57.

[0027] The power transmission mechanism 5 further comprises a butt joint cylinder 58, a threaded rod 59 and a worm wheel 510, the butt joint cylinder 58 is arranged in the fixed seat 56, one end of the threaded rod 59 is fixed on the wedge block 57, the other end is slidingly butted in the butt joint cylinder 58, the worm wheel 510 is coaxially connected with the butt joint cylinder 58, and a threaded hole is arranged at the axis of the worm wheel 510, the threaded rod 59 is threadedly connected in the threaded hole, and the fixed seat 56 is rotatably connected with an adjusting rod 6, one end of the adjusting rod 6 is coaxially fixed with a worm 511, and the worm 511 is engaged with the worm wheel 510.

[0028] It should be noted that, since the existing water conservancy engineering rock soil sampler driving system usually adopts the transmission chain structure of “motor-gear set-lead screw”, the gear set inevitably has a tooth side gap in the processing and assembly process, which is easy to cause tooth wear and crack in long-term operation, and also causes the transmission chain to have “empty stroke”, which causes the position control precision to be reduced. For the high-precision sampling required in water conservancy engineering, this error may cause the sample depth positioning deviation, and affect the detection accuracy of subsequent rock mechanics parameters. In order to solve this problem, the power transmission mechanism 5 is arranged in the scheme, the worm 511 drives the worm wheel 510 to engage and link, and the threaded rod 59 is threadedly linked, so as to drive the wedge block 57 to slide in the fixed seat 56, and synchronously push the abutting rod 54 and the limiting rod 55 to be away from each other, so that the driven gear 51 and the backlash elimination gear 52 can be deflected to a certain extent, fill the assembly gap between them and the driving gear 4, and disperse the impact load by the mutual cooperation of the two gears, keep the stable transmission state, greatly reduce the probability of gear tooth phenomenon, improve the reliability of the equipment under complex working conditions, eliminate the assembly gap from the root, reduce the impact and wear between the gears, and greatly reduce the failure rate of the equipment in long-term water conservancy engineering rock soil sampling operation, and prolong the maintenance cycle. This not only saves a lot of maintenance time and labor cost, but also improves the use efficiency of the equipment, and provides a strong guarantee for the smooth development of water conservancy detection work.

[0029] Specifically, in this embodiment, this scheme mainly includes the sampler bracket 1, the screw 2, the servo motor 3, the driving gear 4, the power transmission mechanism 5 and the adjusting rod 6. When in use, the worm 511 is first driven to rotate by the adjusting rod 6. At this time, the worm gear 510 is meshed and linked, and the threaded rod 59 is threadedly linked through the screw hole at the axis of the worm gear 510, and then the wedge block 57 is driven to slide in the fixed seat 56 by the threaded rod 59. At the same time, the wedge block 57 abuts against the abutting rod 54 and the limit rod 55, and pushes the two to move away from each other, thereby driving the gap elimination gear 52 to deflect to a certain extent on the driven gear 51 until the assembly gap between the two and the driving gear 4 is eliminated. When sampling, the servo motor 3 drives the driving gear 4 to rotate, and the driven gear 51 and the gap elimination gear 52 are driven to mesh and link through the driving gear 4, and drive the screw 2 to synchronize and link to perform the sampling operation.

[0030] In a further preferred embodiment of the present invention, Figures 1-5 As shown, a positioning plate 7 is coaxially fixed to the other end of the adjusting rod 6, and a rectangular slot is provided at the edge of the positioning plate 7. A protrusion 8 is fixed on the outer wall of the fixing seat 56, and a locking rod 9 is slidably connected to the protrusion 8. One end of the locking rod 9 is clamped in the rectangular slot.

[0031] In this embodiment, the positioning disk 7 is locked by the locking rod 9, thereby preventing the adjusting rod 6 from rotating due to accidental touch.

[0032] In a further preferred embodiment of the present invention, Figures 1-5 As shown, a chuck 10 is fixed on the locking rod 9 , and a return spring 11 is sleeved on the outside of the locking rod 9 , one end of the return spring 11 abuts against the protrusion 8 , and the other end abuts against the chuck 10 .

[0033] In this embodiment, the locking rod 9 is pushed to move by the elastic force of the return spring 11 , so that one end of the locking rod 9 can always be engaged in the locking groove at the edge of the positioning plate 7 .

[0034] In a further preferred embodiment of the present invention, Figures 1-5 As shown, the driving gear 4 , the driven gear 51 and the backlash eliminating gear 52 all have helical gear structures, and the driven gear 51 and the backlash eliminating gear 52 have the same diameter and are larger than the driving gear 4 .

[0035] In this embodiment, the helical tooth structure makes the gear set more stable during transmission, and the output torque of the servo motor 3 is increased by the gear sets with different diameters.

[0036] It should be noted that for the foregoing embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should know that the present application is not limited by the action sequence described, because according to the present application, some steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification all belong to preferred embodiments, and the actions and modules involved are not necessarily necessary for the present application.

[0037] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented by other ways. For example, the device embodiments described above are only illustrative, for example, the division of the above units, actual implementation can have another division way, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point, the coupling or communication connection between the displayed or discussed each other can be through some interface, indirect coupling or communication connection between devices or units, which can be electrical or other forms.

[0038] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they can be located in one place, or they can be distributed on multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment scheme.

[0039] The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the protection scope of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application. Although the present application is described in detail with reference to the above embodiments, those skilled in the art can still combine, add or delete or make other adjustments to the features in each embodiment of the present application according to the circumstances without creative labor, so as to obtain different other technical solutions which do not deviate from the concept of the present application in essence. These technical solutions also belong to the scope of the present application.

Claims

1. A rock and soil sampler for water conservancy project detection, characterized in that: include: A sampler bracket (1), a lead screw (2), a servo motor (3), a driving gear (4) and a power transmission mechanism (5), wherein the lead screw (2) is rotatably connected to the sampler bracket (1), the servo motor (3) is fixed to the top of the sampler bracket (1), the driving gear (4) is coaxially fixed to the output shaft of the servo motor (3), and the power transmission mechanism (5) is arranged on the lead screw (2); The power transmission mechanism (5) includes a driven gear (51), a gap elimination gear (52), a slide groove (53), an abutting rod (54), a limiting rod (55), a fixing seat (56) and a wedge block (57), wherein the driven gear (51) is coaxially fixed to the top of the lead screw (2), the gap elimination gear (52) is coaxially rotatably connected to the top of the driven gear (51), the slide groove (53) is provided through the gap elimination gear (52), and the abutting rod (54) is fixed to the driven gear (51), passes through the slide groove (53), and is slidably connected to the gap elimination gear (52); The limiting rod (55) is fixed on the gap elimination gear (52), the fixing seat (56) is fixed on the top of the gap elimination gear (52), and a rectangular notch is provided on the fixing seat (56). The wedge block (57) is slidably engaged in the rectangular notch of the fixing seat (56), and the abutting rod (54) and the limiting rod (55) are respectively slidably engaged on both sides of the wedge block (57).

2. The rock and soil sampler for water conservancy project detection according to claim 1, characterized in that: The power transmission mechanism (5) further comprises a docking sleeve (58), a threaded rod (59) and a worm gear (510), wherein the docking sleeve (58) is arranged in a fixed seat (56), one end of the threaded rod (59) is fixed on a wedge block (57), and the other end is slidably docked in the docking sleeve (58), the worm gear (510) is coaxially rotatably connected to the docking sleeve (58), and a screw hole is provided at the axis of the worm gear (510), and the threaded rod (59) is threadedly engaged in the screw hole.

3. The rock and soil sampler for water conservancy project detection according to claim 2, characterized in that: An adjusting rod (6) is rotatably connected in the fixing seat (56), a worm (511) is coaxially fixed to one end of the adjusting rod (6), and the worm (511) is meshed with the worm wheel (510).

4. The rock and soil sampler for water conservancy project detection according to claim 3, characterized in that: A positioning plate (7) is coaxially fixed to the other end of the adjusting rod (6), and a rectangular slot is provided at the edge of the positioning plate (7). A protrusion (8) is fixed on the outer wall of the fixing seat (56), and a locking rod (9) is slidably connected to the protrusion (8), and one end of the locking rod (9) is clamped in the rectangular slot.

5. The rock and soil sampler for water conservancy project detection according to claim 4, characterized in that: A chuck (10) is fixed on the locking rod (9), and a return spring (11) is sleeved on the outside of the locking rod (9), one end of the return spring (11) abuts against the protrusion (8), and the other end abuts against the chuck (10).

6. The rock and soil sampler for water conservancy project detection according to claim 1, characterized in that: The driving gear (4), the driven gear (51) and the clearance eliminating gear (52) all have helical tooth structures, and the driven gear (51) and the clearance eliminating gear (52) have the same diameter and are larger than the driving gear (4).

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